Patents by Inventor Sohichiroh IIDA

Sohichiroh IIDA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20210023778
    Abstract: A resin powder for solid freeform fabrication is provided which maintains the degree of smoothness of a thin layer formed with the resin powder for solid freeform fabrication even when the speed of supplying the resin powder for solid freeform fabrication using a recoater is increased and reduce lowering of the degree of smoothness of the thin layer caused by the resin powder for solid freeform fabrication that has scattered and accumulated on the recoater and others.
    Type: Application
    Filed: July 23, 2020
    Publication date: January 28, 2021
    Inventors: Sohichiroh Iida, Hitoshi Iwatsuki, Satoshi Ogawa, Yunsheng Sun
  • Publication number: 20200398458
    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.
    Type: Application
    Filed: November 9, 2018
    Publication date: December 24, 2020
    Inventors: Nozomu TAMOTO, Hitoshi IWATSUKI, Yasuo SUZUKI, Yasuyuki YAMASHITA, Sohichiroh IIDA, Shinzo HIGUCHI, Akira SAITO, Kiichi KAMODA, Yoshihiko FURUGOHRI, Shinsuke NAGAI
  • Patent number: 10800096
    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.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: October 13, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Sohichiroh Iida, Shigenori Yaguchi, Hitoshi Iwatsuki, Yasuo Suzuki, Nozomu Tamoto, Shinzo Higuchi, Akira Saito, Yasuyuki Yamashita, Kiichi Kamoda
  • Publication number: 20200079011
    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.
    Type: Application
    Filed: September 6, 2019
    Publication date: March 12, 2020
    Inventors: Hitoshi IWATSUKI, Sohichiroh IIDA, Yunsheng SUN, Satoshi OGAWA
  • Publication number: 20200070412
    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.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Inventors: Yunsheng SUN, Toshiyuki Mutoh, Hitoshi Iwatsuki, Shigenori Yaguchi, Mitsuru Naruse, Sohichiroh IIDA
  • Publication number: 20200070468
    Abstract: A fiber aggregation contains fiber containing a thermoplastic resin, each of the fiber being mutually joined and aligned.
    Type: Application
    Filed: September 3, 2019
    Publication date: March 5, 2020
    Inventors: Sohichiroh IIDA, Hitoshi IWATSUKI, Mitsuru NARUSE, Satoshi OGAWA, Yunsheng SUN
  • Publication number: 20200016827
    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.
    Type: Application
    Filed: March 7, 2018
    Publication date: January 16, 2020
    Inventors: Yasuyuki YAMASHITA, Akira SAITO, Sohichiroh IIDA, Hitoshi IWATSUKI, Yasuo SUZUKI, Nozomu TAMOTO, Kiichi KAMODA, Shigenori YAGUCHI, Shinzo HIGUCHI, Toshiyuki ISEKI, Yasutomo AMAN, Toshiyuki MUTOH, Mitsuru NARUSE
  • Publication number: 20190241734
    Abstract: A powder for solid freeform fabrication includes a first resin particle and a second resin particle, wherein MFR2 is greater than MFR1 and a ratio of MFR2 to MFR1 is from 2 to 5, where MFR1 represents a melt mass-flow rate (MFR) of the first resin particle and MFR2 represents a melt mass-flow rate of the second resin particle.
    Type: Application
    Filed: February 6, 2019
    Publication date: August 8, 2019
    Inventors: Mitsuru Naruse, Akira Saito, Hitoshi Iwatsuki, Yasuyuki Yamashita, Toshiyuki Mutoh, Yasutomo Aman, Kiichi Kamoda, Sohichiroh Iida, Shinzo Higuchi, Toshiyuki Iseki
  • Publication number: 20190134853
    Abstract: A particle for solid freeform fabrication having a columnar form has end surfaces and a side surface, wherein one of the end surfaces partially covers the side surface.
    Type: Application
    Filed: November 8, 2018
    Publication date: May 9, 2019
    Inventors: Hitoshi IWATSUKI, Yasuyuki YAMASHITA, Kiichi KAMODA, Toshiyuki MUTOH, Yasutomo AMAN, Toshiyuki ISEKI, Mitsuru NARUSE, Akira SAITO, Shinzo HIGUCHI, Sohichiroh IIDA
  • Publication number: 20180264721
    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.
    Type: Application
    Filed: March 13, 2018
    Publication date: September 20, 2018
    Inventors: Sohichiroh IIDA, Shigenori Yaguchi, Hitoshi Iwatsuki, Yasuo Suzuki, Nozomu Tamoto, Shinzo Higuchi, Akira Saito, Yasuyuki Yamashita, Kiichi Kamoda
  • Publication number: 20180264720
    Abstract: A resin powder for solid freeform fabrication contains pillar-like form particles having an average circularity of 0.83 or greater in a particle diameter range of from 0.5 to 200 ?m.
    Type: Application
    Filed: March 12, 2018
    Publication date: September 20, 2018
    Inventors: Nozomu TAMOTO, Sohichiroh IIDA, Akira SAITO, Yasuyuki YAMASHITA, Hitoshi IWATSUKI, Shinzo HIGUCHI, Kiichi KAMODA
  • Publication number: 20180147780
    Abstract: A method of manufacturing a solid freeform fabrication object includes forming a layer of resin powder for solid freeform fabrication including particles having a pillar-like form and solidifying a particular area of the layer with irradiation of laser beams, wherein the laser beams have an energy intensity distribution having a top hat-like form.
    Type: Application
    Filed: November 27, 2017
    Publication date: May 31, 2018
    Inventors: Kiichi KAMODA, Yasuyuki YAMASHITA, Akira SAITO, Sohichiroh IIDA, Shinzo HIGUCHI, Hitoshi IWATSUKI, Nozomu TAMOTO, Yasuo SUZUKI
  • Publication number: 20180023219
    Abstract: A resin powder for solid freeform fabrication includes a particle having a pillar-like form, wherein the ratio of the height of the particle to the diameter or the long side of the bottom of the particle is 0.5 to 2.0, the particle has a 50 percent cumulative volume particle diameter of from 5 to 200 ?m, and the ratio (Mv/Mn) of the volume average particle diameter (Mv) to the number average particle diameter (Mn) of the particle is 2.00 or less.
    Type: Application
    Filed: July 21, 2017
    Publication date: January 25, 2018
    Inventors: Akira SAITO, Shigenori YAGUCHI, Yasuyuki YAMASHITA, Kiichi KAMODA, Yasuo SUZUKI, Nozomu TAMOTO, Hitoshi IWATSUKI, Shinzo HIGUCHI, Sohichiroh IIDA