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No. Publication Number Title Publication/Patent Number Publication/Patent Number Publication Date Publication Date
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1
US2020114574A1
RESIN POWDER AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: US2020114574A1 Publication Date: 2020-04-16 Application Number: 16/563,590 Filing Date: 2019-09-06 Inventor: Kamoda, Kiichi   Saito, Akira   Aman, Yasutomo   Iwatsuki, Hitoshi   Assignee: KAMODA, Kiichi   SAITO, Akira   AMAN, Yasutomo   IWATSUKI, Hitoshi   IPC: B29C64/153 Abstract: A resin powder contains a resin contains columnar particles, wherein the proportion of the columnar particles having a ratio (L/W) of less than 1 is 50 percent by volume or more in the total volume of the resin powder, where W represents the width in the radial direction of the columnar particles and L represents the length in the axis direction of the columnar particles.
2
EP3620283A1
RESIN POWDER, METHOD OF AND DEVICE FOR MANUFACTURING A SOLID FREEFORM OBJECT
Publication/Patent Number: EP3620283A1 Publication Date: 2020-03-11 Application Number: 19195017.9 Filing Date: 2019-09-03 Inventor: Iwatsuki, Hitoshi   Iida, Sohichiroh   Sun, Yunsheng   Ogawa, Satoshi   Assignee: Ricoh Company, Ltd.   IPC: B29B9/16 Abstract: A resin powder contains a resin containing particles, wherein the proportion of the particles in an aspect ratio range X represented by the following inequality 1 is 50 percent by number or more in a number distribution of an aspect ratio of the resin powder: A50 - 1 ≤ X ≤ A50 + 1 Inequality 1, where A50 represents a median of the aspect ratio. Further disclosed is a method of manufacturing a solid freeform fabricated object comprising forming a layer comprising such a resin powder, irradiating the layer with electromagnetic wave to melt the layer and repeating the forming and the irradiating. Also disclosed is a device for manufacturing a solid freeform fabricated object comprising a supply tank (11) configured to accommodate such a resin powder, a layer forming device (12) configured to form a layer of the resin powder, and a melting device (18) configured to irradiate the layer with electromagnetic wave to melt the layer.
3
EP3628460A2
RESIN POWDER, DEVICE FOR MANUFACTURING SOLID FREEFORM FABRICATION OBJECT, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3628460A2 Publication Date: 2020-04-01 Application Number: 19195836.2 Filing Date: 2019-09-06 Inventor: Kamoda, Kiichi   Saito, Akira   Aman, Yasutomo   Iwatsuki, Hitoshi   Assignee: Ricoh Company, Ltd.   IPC: B29B9/06 Abstract: A resin powder contains a resin contains columnar particles, wherein the proportion of the columnar particles having a ratio (L/W) of less than 1 is 50 percent by volume or more in the total volume of the resin powder, where W represents the width in the radial direction of the columnar particles and L represents the length in the axis direction of the columnar particles.
4
EP3628460A3
RESIN POWDER, DEVICE FOR MANUFACTURING SOLID FREEFORM FABRICATION OBJECT, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3628460A3 Publication Date: 2020-08-19 Application Number: 19195836.2 Filing Date: 2019-09-06 Inventor: Kamoda, Kiichi   Saito, Akira   Aman, Yasutomo   Iwatsuki, Hitoshi   Assignee: Ricoh Company, Ltd.   IPC: B29B9/06 Abstract: A resin powder contains a resin contains columnar particles, wherein the proportion of the columnar particles having a ratio (L/W) of less than 1 is 50 percent by volume or more in the total volume of the resin powder, where W represents the width in the radial direction of the columnar particles and L represents the length in the axis direction of the columnar particles.
5
US2020079011A1
RESIN POWDER, METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT, AND DEVICE FOR MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: US2020079011A1 Publication Date: 2020-03-12 Application Number: 16/562,734 Filing Date: 2019-09-06 Inventor: Iwatsuki, Hitoshi   Iida, Sohichiroh   Sun, Yunsheng   Ogawa, Satoshi   Assignee: IWATSUKI, Hitoshi   IIDA, Sohichiroh   SUN, Yunsheng   OGAWA, Satoshi   IPC: B29C64/153 Abstract: A resin powder contains a resin containing particles, wherein the proportion of the particles in an aspect ratio range X represented by the following inequality 1 is 50 percent by number or more in a number distribution of an aspect ratio of the resin powder: A50−1≤X≤A50+1 Inequality 1, where A50 represents a median of the aspect ratio.
6
EP3617359A1
FIBER AGGREGATION, SHORT FIBER, FILM, AND METHOD OF MANUFACTURING THE SHORT FIBER
Publication/Patent Number: EP3617359A1 Publication Date: 2020-03-04 Application Number: 19194849.6 Filing Date: 2019-09-02 Inventor: Iida, Sohichiroh   Iwatsuki, Hitoshi   Naruse, Mitsuru   Ogawa, Satoshi   Sun, Yunsheng   Assignee: Ricoh Company, Ltd.   IPC: D04H1/4282 Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
7
US2020070468A1
FIBER AGGREGATION, SHORT FIBER AND METHOD OF MANUFACTURING THE SAME, AND FILM AND METHOD OF MANUFACTURING THE SAME
Publication/Patent Number: US2020070468A1 Publication Date: 2020-03-05 Application Number: 16/558,492 Filing Date: 2019-09-03 Inventor: Iida, Sohichiroh   Iwatsuki, Hitoshi   Naruse, Mitsuru   Ogawa, Satoshi   Sun, Yunsheng   Assignee: IIDA, Sohichiroh   IWATSUKI, Hitoshi   NARUSE, Mitsuru   OGAWA, Satoshi   SUN, Yunsheng   IPC: B32B5/06 Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
8
EP3616869A1
RESIN POWDER, DEVICE AND METHOD OF MANUFACTURING A SOLID FREEFORM OBJECT
Publication/Patent Number: EP3616869A1 Publication Date: 2020-03-04 Application Number: 19193743.2 Filing Date: 2019-08-27 Inventor: Sun, Yunsheng   Mutoh, Toshiyuki   Iwatsuki, Hitoshi   Yaguchi, Shigenori   Naruse, Mitsuru   Iida, Sohichiroh   Assignee: Ricoh Company, Ltd.   IPC: B29B9/12 Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder. Further claimed is a device 200 for manufacturing a solid freeform object comprising a layer forming device 14 configured to form a layer comprising a resin powder comprising a resin, and a powder attaching device 15 configured to attach the resin powder in a selected area of the layer, wherein a proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.
9
US2020070412A1
RESIN POWDER, DEVICE FOR SOLID FREEFORM FABRICATION OBJECT, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: US2020070412A1 Publication Date: 2020-03-05 Application Number: 16/555,751 Filing Date: 2019-08-29 Inventor: Sun, Yunsheng   Mutoh, Toshiyuki   Iwatsuki, Hitoshi   Yaguchi, Shigenori   Naruse, Mitsuru   Iida, Sohichiroh   Assignee: SUN, Yunsheng   Mutoh, Toshiyuki   Iwatsuki, Hitoshi   Yaguchi, Shigenori   Naruse, Mitsuru   IIDA, Sohichiroh   IPC: B29C64/153 Abstract: A resin powder contains a resin, wherein the proportion of fine powder having a number diameter of 40 percent or less of a mean number diameter Mn of the resin powder is 30 percent or less in the resin powder.
10
EP3199265B1
SOLID FREEFORM FABRICATION POWDER MATERIAL, SOLID FREEFORM FABRICATION MATERIAL SET, METHOD OF MANUFACTURING SOLID FREEFORM FABRICATOIN OBJECT, METHOD OF MANUFACTURING SINTERED COMPACT, AND DEVICE FOR MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3199265B1 Publication Date: 2020-05-27 Application Number: 17150750.2 Filing Date: 2017-01-10 Inventor: Yamashita, Yasuyuki   Suzuki, Yasuo   Iwatsuki, Hitoshi   Kusahara, Teruki   Yamaguchi, Takeo   Saito, Takuya   Tamoto, Nozomu   Assignee: Ricoh Company, Ltd.   IPC: B22F3/00
11
EP3710516A1
RESIN PARTICLE PRODUCING METHOD
Publication/Patent Number: EP3710516A1 Publication Date: 2020-09-23 Application Number: 18876445.0 Filing Date: 2018-11-09 Inventor: Tamoto, Nozomu   Iwatsuki, Hitoshi   Suzuki, Yasuo   Yamashita, Yasuyuki   Iida, Sohichiroh   Higuchi, Shinzo   Saito, Akira   Kamoda, Kiichi   Furugohri, Yoshihiko   Nagai, Shinsuke   Assignee: Ricoh Company, Ltd.   IPC: C08J3/12
12
US10800096B2
Resin powder for solid freeform fabrication and device for solid freeform fabrication object
Publication/Patent Number: US10800096B2 Publication Date: 2020-10-13 Application Number: 15/919,251 Filing Date: 2018-03-13 Inventor: Iida, Sohichiroh   Yaguchi, Shigenori   Iwatsuki, Hitoshi   Suzuki, Yasuo   Tamoto, Nozomu   Higuchi, Shinzo   Saito, Akira   Yamashita, Yasuyuki   Kamoda, Kiichi   Assignee: Ricoh Company, Ltd.   IPC: B29C64/153 Abstract: A resin powder for solid freeform fabrication includes resin particles having a significantly pillar-like form including resin particles having a concave portion on the circumferential side surface.
13
EP3750943A1
RESIN POWDER FOR SOLID FREEFORM FABRICATION, DEVICE FOR SOLID FREEFORM FABRICATION OBJECT, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3750943A1 Publication Date: 2020-12-16 Application Number: 20177083.1 Filing Date: 2017-07-21 Inventor: Saito, Akira   Yamashita, Yasuyuki   Kamoda, Kiichi   Yaguchi, Shigenori   Tamoto, Nozomu   Iwatsuki, Hitoshi   Higuchi, Shinzo   Iida, Sohichiroh   Suzuki, Yasuo   Assignee: Ricoh Company, Ltd.   IPC: C08J3/12 Abstract: A resin powder for solid freeform fabrication having an average circularity of 0.70 and satisfies at least one of the following conditions (1) to (3): (1): Tmfl > Tmf2 and (Tmfl - Tmf2) ≥ 3 degrees C, both Tmfl and Tmf2 are measured in differential scanning calorimetry measuring according to ISO 3146, (2): Cd1 > Cd2 and (Cdl - Cd2) ≥ 3 percent, both Cd1 and Cd2 are measured in differential scanning calorimetry measuring according to ISO 3146, and (3): C × 1 > C × 2 and (C × 1 - C × 2) ≥ 3 percent.
14
US2020398458A1
RESIN PARTICLE PRODUCING METHOD
Publication/Patent Number: US2020398458A1 Publication Date: 2020-12-24 Application Number: 16/763,126 Filing Date: 2018-11-09 Inventor: Tamoto, Nozomu   Iwatsuki, Hitoshi   Suzuki, Yasuo   Yamashita, Yasuyuki   Iida, Sohichiroh   Higuchi, Shinzo   Saito, Akira   Kamoda, Kiichi   Furugohri, Yoshihiko   Nagai, Shinsuke   Assignee: TAMOTO, Nozomu   IWATSUKI, Hitoshi   SUZUKI, Yasuo   YAMASHITA, Yasuyuki   IIDA, Sohichiroh   HIGUCHI, Shinzo   SAITO, Akira   KAMODA, Kiichi   FURUGOHRI, Yoshihiko   NAGAI, Shinsuke   IPC: B29B9/06 Abstract: Provided is a resin particle producing method including: a fiber aggregate producing step of directly joining fibers containing a thermoplastic resin with each other to obtain a fiber aggregate; and a particle forming step of forming the fiber aggregate into particles to obtain resin particles.
15
EP3272788B1
RESIN POWDER FOR SOLID FREEFORM FABRICATION, DEVICE FOR SOLID FREEFORM FABRICATION OBJECT, AND METHOD OF MANUFACTURING SOLID FREEFORM FABRICATION OBJECT
Publication/Patent Number: EP3272788B1 Publication Date: 2020-07-08 Application Number: 17182489.9 Filing Date: 2017-07-21 Inventor: Saito, Akira   Yamashita, Yasuyuki   Kamoda, Kiichi   Yaguchi, Shigenori   Tamoto, Nozomu   Iwatsuki, Hitoshi   Higuchi, Shinzo   Iida, Sohichiroh   Suzuki, Yasuo   Assignee: Ricoh Company, Ltd.   IPC: C08J3/12
16
EP3326786B1
METHOD AND DEVICE FOR MANUFACTURING A SHAPED OBJECT
Publication/Patent Number: EP3326786B1 Publication Date: 2020-08-19 Application Number: 17202904.3 Filing Date: 2017-11-21 Inventor: Kamoda, Kiichi   Yamashita, Yasuyuki   Saito, Akira   Iida, Sohichiroh   Higuchi, Shinzo   Iwatsuki, Hitoshi   Tamoto, Nozomu   Suzuki, Yasuo   Assignee: Ricoh Company, Ltd.   IPC: B29C64/268
17
US10682808B2
Three-dimensional object fabrication method, fabrication apparatus, and fabrication system
Publication/Patent Number: US10682808B2 Publication Date: 2020-06-16 Application Number: 16/056,855 Filing Date: 2018-08-07 Inventor: Fujita, Takashi   Saito, Akira   Kamoda, Kiichi   Shitara, Yasutada   Watanabe, Kazuhiko   Iwatsuki, Hitoshi   Endoh, Yuuya   Kimura, Kazufumi   Yamashita, Yasuyuki   Koshizuka, Shinnosuke   Kamon, Yuuki   Tamoto, Nozomu   Assignee: RICOH COMPANY, LTD.   IPC: B29C64/147 Abstract: A fabrication method includes laminating a fabrication material to form an object, and applying a release material on a surface of the object to form a release layer on the surface of the object. A surface free energy of the release material is equal to or smaller than 25 mN/m.
18
US202016827A1
RESIN POWDER FOR PRODUCING THREE-DIMENSIONAL OBJECT, THREE-DIMENSIONAL OBJECT PRODUCING METHOD, AND THREE-DIMENSIONAL OBJECT PRODUCING APPARATUS
Publication/Patent Number: US202016827A1 Publication Date: 2020-01-16 Application Number: 20/181,649 Filing Date: 2018-03-07 Inventor: Suzuki, Yasuo   Saito, Akira   Tamoto, Nozomu   Aman, Yasutomo   Iseki, Toshiyuki   Naruse, Mitsuru   Mutoh, Toshiyuki   Yamashita, Yasuyuki   Iida, Sohichiroh   Higuchi, Shinzo   Iwatsuki, Hitoshi   Yaguchi, Shigenori   Kamoda, Kiichi   Assignee: Suzuki, Yasuo   Saito, Akira   Tamoto, Nozomu   Aman, Yasutomo   Iseki, Toshiyuki   Naruse, Mitsuru   Mutoh, Toshiyuki   YAMASHITA, Yasuyuki   IIDA, Sohichiroh   HIGUCHI, Shinzo   IWATSUKI, Hitoshi   YAGUCHI, Shigenori   KAMODA, Kiichi   IPC: C08J3/12 Abstract: Provided is a resin powder for producing a three-dimensional object, wherein the resin powder has a number-average equivalent circle diameter of 10 micrometers or greater but 150 micrometers or less, and wherein a median in an equivalent circle diameter-based particle size distribution of the resin powder is higher than the average equivalent circle diameter.
19
EP3601416A1
RESIN POWDER FOR PRODUCING THREE-DIMENSIONAL OBJECT, THREE-DIMENSIONAL OBJECT PRODUCING METHOD, AND THREE-DIMENSIONAL OBJECT PRODUCING APPARATUS
Publication/Patent Number: EP3601416A1 Publication Date: 2020-02-05 Application Number: 18716366.2 Filing Date: 2018-03-07 Inventor: Yamashita, Yasuyuki   Saito, Akira   Iida, Sohichiroh   Iwatsuki, Hitoshi   Suzuki, Yasuo   Tamoto, Nozomu   Kamoda, Kiichi   Yaguchi, Shigenori   Higuchi, Shinzo   Iseki, Toshiyuki   Aman, Yasutomo   Mutoh, Toshiyuki   Naruse, Mitsuru   Assignee: Ricoh Company, Ltd.   IPC: C08J3/12
20
US2020016827A1
RESIN POWDER FOR PRODUCING THREE-DIMENSIONAL OBJECT, THREE-DIMENSIONAL OBJECT PRODUCING METHOD, AND THREE-DIMENSIONAL OBJECT PRODUCING APPARATUS
Publication/Patent Number: US2020016827A1 Publication Date: 2020-01-16 Application Number: 16/495,327 Filing Date: 2018-03-07 Inventor: Yamashita, Yasuyuki   Saito, Akira   Iida, Sohichiroh   Iwatsuki, Hitoshi   Suzuki, Yasuo   Tamoto, Nozomu   Kamoda, Kiichi   Yaguchi, Shigenori   Higuchi, Shinzo   Iseki, Toshiyuki   Aman, Yasutomo   Mutoh, Toshiyuki   Naruse, Mitsuru   Assignee: YAMASHITA, Yasuyuki   SAITO, Akira   IIDA, Sohichiroh   IWATSUKI, Hitoshi   SUZUKI, Yasuo   TAMOTO, Nozomu   KAMODA, Kiichi   YAGUCHI, Shigenori   HIGUCHI, Shinzo   ISEKI, Toshiyuki   AMAN, Yasutomo   MUTOH, Toshiyuki   NARUSE, Mitsuru   IPC: B29C64/153 Abstract: Provided is a resin powder for producing a three-dimensional object, wherein the resin powder has a number-average equivalent circle diameter of 10 micrometers or greater but 150 micrometers or less, and wherein a median in an equivalent circle diameter-based particle size distribution of the resin powder is higher than the average equivalent circle diameter.