Country
Full text data for US,EP,CN
Type
Legal Validity
Legal Status
Filing Date
Publication Date
Inventor
Assignee
Click to expand
IPC(Section)
IPC(Class)
IPC(Subclass)
IPC(Group)
IPC(Subgroup)
Agent
Agency
Claims Number
Figures Number
Citation Number of Times
Assignee Number
No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
Application Number Application Number Filing Date Filing Date
Inventor Inventor Assignee Assignee IPC IPC
1 WO2007148060A8
PCD CUTTERS WITH ENHANCED WORKING SURFACES ADJACENT A CAVITY
Publication/Patent Number: WO2007148060A8 Publication Date: 2009-01-22 Application Number: 2007002263 Filing Date: 2007-06-18 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: ReedHycalog UK Limited   GRIFFIN, NIGEL, DENNIS   HUGHES, PETER, RAYMOND   IPC: E21B10/573 Abstract: A PCD cutting element (2010) having a table of superhard material (2022) bonded to a substrate (2024). The superhard material has a first end working surface and an intermediate peripheral working surface (2028) adjacent the substrate. A cavity (2002
2 WO2007148060A1
PCD CUTTERS WITH ENHANCED WORKING SURFACES ADJACENT A CAVITY
Publication/Patent Number: WO2007148060A1 Publication Date: 2007-12-27 Application Number: 2007002263 Filing Date: 2007-06-18 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: ReedHycalog UK Limited   GRIFFIN, NIGEL, DENNIS   HUGHES, PETER, RAYMOND   IPC: E21B10/573 Abstract: A PCD cutting element (2010) having a table of superhard material (2022) bonded to a substrate (2024). The superhard material has a first end working surface and an intermediate peripheral working surface (2028) adjacent the substrate. A cavity (2002
3 US2004007393A1
Cutter and method of manufacture thereof
Publication/Patent Number: US2004007393A1 Publication Date: 2004-01-15 Application Number: 10/064,428 Filing Date: 2002-07-12 Inventor: Griffin, Nigel Dennis   Assignee: Griffin, Nigel Dennis   IPC: E21B010/36 Abstract: A polycrystalline diamond cutter and method of manufacturing a polycrystalline diamond cutter is disclosed. The method of manufacture comprising assembling a first substrate component, a second substrate component and diamond crystals into a desired configuration. The assembly is subjected to high temperature and high pressure conditions to cause the diamond crystals to bond to one another and to the first and second substrate components. The method forms a cutter having a single body of polycrystalline diamond bonded to the substrate components. A polycrystalline diamond cutter and method of manufacturing a polycrystalline diamond cutter is disclosed. The method of manufacture comprising assembling a first substrate component, a second substrate component and diamond crystals into a desired configuration. The assembly ...More ...Less
4 US2004007394A1
Cutter and method of manufacture thereof
Publication/Patent Number: US2004007394A1 Publication Date: 2004-01-15 Application Number: 10/064,817 Filing Date: 2002-08-21 Inventor: Griffin, Nigel Dennis   Assignee: Griffin, Nigel Dennis   IPC: E21B010/36 Abstract: A polycrystalline diamond cutter and method of manufacturing a polycrystalline diamond cutter is disclosed. The method of manufacture comprising assembling a first substrate component, a second notched substrate component and diamond crystals into a desired configuration. The assembly is subjected to high temperature and high pressure conditions to cause the diamond crystals to bond to one another and to the first and second substrate components. The method forms a cutter having a single body of polycrystalline diamond bonded to the substrate components. A polycrystalline diamond cutter and method of manufacturing a polycrystalline diamond cutter is disclosed. The method of manufacture comprising assembling a first substrate component, a second notched substrate component and diamond crystals into a desired configuration. The ...More ...Less
5 US2004115435A1
High Volume Density Polycrystalline Diamond With Working Surfaces Depleted Of Catalyzing Material
Publication/Patent Number: US2004115435A1 Publication Date: 2004-06-17 Application Number: 10/604,210 Filing Date: 2003-07-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: Disclosed is a method for manufacturing a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85%. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. Typically, less than about 70% of the body of the diamond matrix table is free of the catalyzing material. Disclosed is a method for manufacturing a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The ...More ...Less
6 US2004105806A1
POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL
Publication/Patent Number: US2004105806A1 Publication Date: 2004-06-03 Application Number: 10/605,471 Filing Date: 2003-10-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B01J003/06 Abstract: A method for forming a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material to a depth from the working surface, the remaining interstitial matrix contains the catalyzing material, causing a 950 degrees C. temperature at the working surface to be less than 750 degrees C. at the depth. A method for forming a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less
7 US2003235691A1
POLYCRYSTALLINE DIAMOND PARTIALLY DEPLETED OF CATALYZING MATERIAL
Publication/Patent Number: US2003235691A1 Publication Date: 2003-12-25 Application Number: 10/604,007 Filing Date: 2003-06-20 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications, higher heat transfer capacity in heat sink applications, and has advantages in numerous other applications including hollow dies, indentors, tool mandrels, and wear elements. The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less
8 US2003183426A1
Polycrystalline Material Element with Improved Wear Resistance And Methods of Manufacture Thereof
Publication/Patent Number: US2003183426A1 Publication Date: 2003-10-02 Application Number: 10/249,199 Filing Date: 2003-03-21 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: E21B010/36 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with improved wear resistance. Collectively called PCD elements for the purposes of this specification, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The diamond material is formed and integrally bonded to a substrate containing the catalyzing material during the HTHP process. The diamond body so formed has a working surface, a plurality of crystals being exposed at the working surface, and wherein the exposed crystals are substantially free of microfractures. The exposed parts of the exposed crystals are of rounded or domed form. The present invention provides a superhard polycrystalline diamond or diamond-like element with improved wear resistance. Collectively called PCD elements for the purposes of this specification, these elements are formed with a binder-catalyzing material in a high-temperature ...More ...Less
9 US2003037640A1
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US2003037640A1 Publication Date: 2003-02-27 Application Number: 10/065,604 Filing Date: 2002-11-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B21K005/04 Abstract: The present invention provides a method of making an earth boring drill bit having a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. The present invention provides a method of making an earth boring drill bit having a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these ...More ...Less
10 US2003034182A1
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US2003034182A1 Publication Date: 2003-02-20 Application Number: 10/065,600 Filing Date: 2002-11-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: E21B010/36 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications, higher heat transfer capacity in heat sink applications, and has advantages in numerous other applications including hollow dies, indentors, tool mandrels, and wear elements. The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less
11 US6589640B2
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US6589640B2 Publication Date: 2003-07-08 Application Number: 10/065,602 Filing Date: 2002-11-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B900 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications, higher heat transfer capacity in heat sink applications, and has advantages in numerous other applications including hollow dies, indentors, tool mandrels, and wear elements. The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less
12 US2003035958A1
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US2003035958A1 Publication Date: 2003-02-20 Application Number: 10/065,615 Filing Date: 2002-11-04 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: The present invention provides an earth boring drill bit with a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications and has advantages in numerous other applications. The present invention provides an earth boring drill bit with a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a ...More ...Less
13 US6585064B2
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US6585064B2 Publication Date: 2003-07-01 Application Number: 10/065,615 Filing Date: 2002-11-04 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: E21B1036 Abstract: The present invention provides an earth boring drill bit with a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications and has advantages in numerous other applications. The present invention provides an earth boring drill bit with a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a ...More ...Less
14 US2003035957A1
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US2003035957A1 Publication Date: 2003-02-20 Application Number: 10/065,602 Filing Date: 2002-11-01 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications, higher heat transfer capacity in heat sink applications, and has advantages in numerous other applications including hollow dies, indentors, tool mandrels, and wear elements. The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less
15 US2003021995A1
Method of making polycrystalline diamond with working surfaces depleted of catalyzing material
Publication/Patent Number: US2003021995A1 Publication Date: 2003-01-30 Application Number: 10/065,363 Filing Date: 2002-10-09 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B015/04 Abstract: Griffin, Nigel, et al78.1081-1.3-29 Disclosed is a method for manufacturing a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85%. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. Typically, less than about 70% of the body of the diamond matrix table is free of the catalyzing material. Griffin, Nigel, et al78.1081-1.3-29 Disclosed is a method for manufacturing a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature ...More ...Less
16 US2002045059A1
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
Publication/Patent Number: US2002045059A1 Publication Date: 2002-04-18 Application Number: 09/683,386 Filing Date: 2001-12-20 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B015/00 Abstract: Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85%. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. Typically, less than about 70% of the body of the diamond matrix table is free of the catalyzing material. Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with ...More ...Less
17 US2002033383A1
Machining of polycrystalline diamond
Publication/Patent Number: US2002033383A1 Publication Date: 2002-03-21 Application Number: 09/682,425 Filing Date: 2001-08-31 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B23H009/00 Abstract: A polycrystalline diamond material including a matrix of interstices containing a catalyzing material and a volume close to a working surface thereof substantially free of catalyzing material is treated to render the polycrystalline diamond electrically conductive. In one embodiment, the treatment comprises applying a conductive material layer to a surface of the diamond. A polycrystalline diamond material including a matrix of interstices containing a catalyzing material and a volume close to a working surface thereof substantially free of catalyzing material is treated to render the polycrystalline diamond electrically conductive. In one ...More ...Less
18 US2002034631A1
High volume density polycrystalline diamond with working surfaces depleted of catalyzing material
Publication/Patent Number: US2002034631A1 Publication Date: 2002-03-21 Application Number: 09/682,419 Filing Date: 2001-08-30 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with a plurality of bonded diamond or diamond-like crystals forming a continuous diamond matrix that has a diamond volume density greater than 85%. Interstices among the diamond crystals form a continuous interstitial matrix containing a catalyzing material. The diamond matrix table is formed and integrally bonded with a metallic substrate containing the catalyzing material during the HTHP process. The diamond matrix body has a working surface, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. Typically, less than about 70% of the body of the diamond matrix table is free of the catalyzing material. Disclosed is a polycrystalline diamond or diamond-like element with greatly improved wear resistance without loss of impact strength. These elements are formed with a binder-catalyzing material in a high-temperature, high-pressure (HTHP) process. The PCD element has a body with ...More ...Less
19 US2002034632A1
Polycrystalline diamond partially depleted of catalyzing material
Publication/Patent Number: US2002034632A1 Publication Date: 2002-03-21 Application Number: 09/682,042 Filing Date: 2001-07-13 Inventor: Griffin, Nigel Dennis   Hughes, Peter Raymond   Assignee: Griffin, Nigel Dennis   Hughes, Peter Raymond   IPC: B32B009/00 Abstract: The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a high-temperature, high-pressure process. The PCD element has a plurality of partially bonded diamond or diamond-like crystals forming at least one continuous diamond matrix, and the interstices among the diamond crystals forming at least one continuous interstitial matrix containing a catalyzing material. The element has a working surface and a body, where a portion of the interstitial matrix in the body adjacent to the working surface is substantially free of the catalyzing material, and the remaining interstitial matrix contains the catalyzing material. This translates to higher wear resistance in cutting applications, higher heat transfer capacity in heat sink applications, and has advantages in numerous other applications including hollow dies, indentors, tool mandrels, and wear elements. The present invention provides a superhard polycrystalline diamond or diamond-like element with greatly improved resistance to thermal degradation without loss of impact strength. Collectively called PCD elements, these elements are formed with a binder-catalyzing material in a ...More ...Less