Patents by Inventor Nozomu Tamoto

Nozomu Tamoto 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: 20210317601
    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: June 14, 2021
    Publication date: October 14, 2021
    Inventors: Akira Saito, Shigenori Yaguchi, Yasuyuki Yamashita, Kiichi Kamoda, Yasuo Suzuki, Nozomu Tamoto, Hitoshi Iwatsuki, Shinzo Higuchi, Sohichiroh Iida
  • Publication number: 20210296597
    Abstract: A photoelectric conversion element including: a first electrode; an electron-transporting layer; a hole-transporting layer; and a second electrode. The electron-transporting layer, the hole-transporting layer, and the second electrode are on or above the first electrode. The second electrode includes a charge-collecting layer. The charge-collecting layer includes a conductive nanowire and a conductive polymer that covers at least part of the conductive nanowire and is stacked on the hole-transporting layer.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Inventors: Yuuji TANAKA, Nozomu TAMOTO, Naomichi KANEI, Masato TANAKA, Tamotsu HORIUCHI
  • Publication number: 20210283895
    Abstract: A resin powder for solid freeform fabrication, having a ratio (Mv/Mn) of 2.00 or less, where Mv represents a volume average particle diameter and Mn represents a number average particle diameter and a ratio of melt mass-flow rate B to melt mass-flow rate A of greater than 0.80 to 1.20, wherein the melt mass-flow rate A and the melt mass-flow rate B are respectively measured at 15 degrees C. higher than the melting point under a load of 2.16 kg according to JIS K7210 format before and after the resin powder is maintained at a temperature 15 degrees C. lower than the melting point under a pressure of 0.1 kPa for four hours.
    Type: Application
    Filed: June 1, 2021
    Publication date: September 16, 2021
    Inventors: Akira SAITO, Shigenori YAGUCHI, Yasuo SUZUKI, Nozomu TAMOTO, Shinzo HIGUCHI, Hitoshi IWATSUKI
  • Publication number: 20210280810
    Abstract: A photoelectric conversion element including: a first electrode; a photoelectric conversion layer; and a second electrode, wherein the photoelectric conversion layer includes an electron-transporting layer and a hole-transporting layer, the electron-transporting layer includes a lithium ion, the hole-transporting layer includes an organic hole-transporting material and a lithium salt, and lithium included in the electron-transporting layer is more than lithium included in the hole-transporting layer.
    Type: Application
    Filed: February 25, 2021
    Publication date: September 9, 2021
    Inventors: Nozomu TAMOTO, Yuuji TANAKA, Naomichi KANEI, Tamotsu HORIUCHI, Suzuka NOZOE
  • Publication number: 20210280809
    Abstract: A photoelectric conversion element including: a first electrode; a hole blocking layer; a photoelectric conversion layer; a second electrode; a third electrode; a photoelectric conversion part in which the first electrode, the hole blocking layer, the photoelectric conversion layer, and the second electrode are stacked; an electrode contact part in which the second electrode is in contact with the third electrode; and a division part dividing the photoelectric conversion part and the electrode contact part, wherein an area (S1) where the second electrode is in contact with the third electrode in the electrode contact part and an area (S2) of the photoelectric conversion part satisfy expression (1) below: 1.0×10?5?100×(S1/S2) . . . expression (1).
    Type: Application
    Filed: February 25, 2021
    Publication date: September 9, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Naomichi KANEI, Nozomu TAMOTO, Yuuji TANAKA, Tamotsu HORIUCHI
  • Publication number: 20210273193
    Abstract: Photoelectric conversion element including: substrate; first electrode; hole-blocking layer; photoelectric conversion layer; and second electrode, the photoelectric conversion layer including electron-transporting layer and hole-transporting layer, wherein in photoelectric conversion element edge part in direction orthogonal to stacking direction of the substrate, first electrode, hole-blocking layer, photoelectric conversion layer, and second electrode, electron-transporting layer outermost end is positioned inside than first electrode outermost end, hole-transporting layer outermost end is positioned outside than second electrode outermost end, and the second electrode outermost end is positioned inside than the electron-transporting layer outermost end, and height of edge part including the first electrode outermost end in the stacking direction is smaller than total of average thicknesses of first electrode, hole-blocking layer, and electron-transporting layer, where the height is distance between substra
    Type: Application
    Filed: February 25, 2021
    Publication date: September 2, 2021
    Applicant: Ricoh Company, Ltd.
    Inventors: Naomichi KANEI, Nozomu TAMOTO, Yuuji TANAKA
  • Patent number: 11066758
    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: Grant
    Filed: July 21, 2017
    Date of Patent: July 20, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Saito, Shigenori Yaguchi, Yasuyuki Yamashita, Kiichi Kamoda, Yasuo Suzuki, Nozomu Tamoto, Hitoshi Iwatsuki, Shinzo Higuchi, Sohichiroh Iida
  • Patent number: 11052649
    Abstract: A resin powder for solid freeform fabrication, having a melting point of 100 degrees C. or higher as measured according to ISO 3146 regulation and a ratio of melt mass-flow rate B to melt mass-flow rate A of greater than 0.80 to 1.20, wherein the melt mass-flow rate A and the melt mass-flow rate B are respectively measured at 15 degrees C. higher than the melting point under a load of 2.16 kg according to JIS K7210 format before and after the resin powder is maintained at a temperature 15 degrees C. lower than the melting point under a pressure of 0.1 kPa for four hours.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: July 6, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Akira Saito, Shigenori Yaguchi, Yasuo Suzuki, Nozomu Tamoto, Shinzo Higuchi, Hitoshi Iwatsuki
  • Patent number: 11056600
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer and the second electrode are in contact with each other, and the hole-transporting layer satisfies the following formula: 0%<Rc(50)?0.75% where an average thickness of the hole-transporting layer is determined as X (nm), and Rc(50) is a ratio of an area of projected parts that are projected from a standard line towards the second electrode, where the standard line is present at a position that is away, by X+50 (nm), from an opposite surface of the hole-transporting layer to a surface of the hole-transporting layer in contact with the second electrode.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: July 6, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Tetsuya Honda, Masana Shiba, Yuuji Tanaka, Nozomu Tamoto, Tamotsu Horiuchi
  • Publication number: 20210167287
    Abstract: A photoelectric conversion element including: a first electrode; a perovskite layer; a hole-transporting layer; and a second electrode, wherein the hole-transporting layer includes a compound represented by General Formula (1) or (1a) below; where M represents an alkali metal; X1 and X2, which may be identical to or different from each other, each represent at least one selected from the group consisting of a carbonyl group, a sulphonyl group, and a sulfinyl group; and X3 represents at least one selected from the group consisting of a bivalent alkyl group, an alkenyl group, and an aryl group, and a hydrogen atom of the bivalent alkyl group, the alkenyl group, and the aryl group may be substituted with a halogen atom; where M+ represents an organic cation; and X1, X2, and X3 have the same meanings as X1, X2, and X3 in the General Formula (1).
    Type: Application
    Filed: November 25, 2020
    Publication date: June 3, 2021
    Inventors: Tamotsu HORIUCHI, Takahiro IDE, Yuuji TANAKA, Nozomu TAMOTO, Naomichi KANEI, Masana SHIBA
  • Publication number: 20210104367
    Abstract: Provided is a solar cell module including photoelectric conversion elements, wherein each of the photoelectric conversion elements includes a first substrate, and a first electrode, a hole blocking layer, an electron transport layer, a hole transport layer, a second electrode, and a second substrate on the first substrate, and a sealing member between the first substrate and the second substrate, and wherein, within at least two of the photoelectric conversion elements adjacent to each other, the hole-blocking layers are not extended to each other but the hole transport layers are in a state of a continuous layer where the hole transport layers are extended to each other.
    Type: Application
    Filed: February 19, 2019
    Publication date: April 8, 2021
    Inventors: Yuuji TANAKA, Tamotsu HORIUCHI, Nozomu TAMOTO, Takahiro IDE, Naomichi KANEI
  • Publication number: 20210013412
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer including a photosensitizing compound, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer includes a p-type semiconductor material and a basic compound, ionization potential of the hole-transporting layer is greater than ionization potential of the p-type semiconductor material, and is less than 1.07 times the ionization potential of the p-type semiconductor material, ionization potential of the photosensitizing compound is greater than the ionization potential of the hole-transporting layer, and an acid dissociation constant (pKa) of the basic compound is 6 or greater but 10 or less.
    Type: Application
    Filed: March 13, 2019
    Publication date: January 14, 2021
    Inventors: Naomichi KANEI, Tamotsu HORIUCHI, Yuuji TANAKA, Nozomu TAMOTO, Takahiro IDE
  • Publication number: 20210003931
    Abstract: Provided is a photoelectric conversion device including: a support; a charge-transporting layer including an organic charge-transporting material or a sensitizing dye electrode layer including an organic sensitizing dye, where the charge-transporting layer or the sensitizing dye electrode layer is disposed on the support; and a ceramic film disposed on the charge-transporting layer or the sensitizing dye electrode layer.
    Type: Application
    Filed: January 22, 2019
    Publication date: January 7, 2021
    Inventors: Daisuke KUBO, Hidetoshi KAMI, Suzuka NOZOE, Tomoharu ASANO, Tetsuya TOSHINE, Nozomu TAMOTO, Yuuji TANAKA, Naomichi KANEI
  • 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
  • Patent number: 10682808
    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.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: June 16, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takashi Fujita, Akira Saito, Kiichi Kamoda, Yasutada Shitara, Kazuhiko Watanabe, Hitoshi Iwatsuki, Yuuya Endoh, Kazufumi Kimura, Yasuyuki Yamashita, Shinnosuke Koshizuka, Yuuki Kamon, Nozomu Tamoto
  • 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: 20190305168
    Abstract: Provided is a photoelectric conversion element including a first electrode, an electron-transporting layer, a hole-transporting layer, and a second electrode, wherein the hole-transporting layer and the second electrode are in contact with each other, and the hole-transporting layer satisfies the following formula: 0%<Rc(50)?0.75% where an average thickness of the hole-transporting layer is determined as X (nm), and Rc(50) is a ratio of an area of projected parts that are projected from a standard line towards the second electrode, where the standard line is present at a position that is away, by X+50 (nm), from an opposite surface of the hole-transporting layer to a surface of the hole-transporting layer in contact with the second electrode.
    Type: Application
    Filed: March 13, 2019
    Publication date: October 3, 2019
    Inventors: Tetsuya Honda, Masana Shiba, Yuuji Tanaka, Nozomu Tamoto, Tamotsu Horiuchi
  • Patent number: 10293555
    Abstract: Provided is a liquid material for forming a three-dimensional object. The liquid material is adapted to harden a powder material for forming a three-dimensional object containing an organic material. The liquid material contains a solvent and a cross-linking agent. A dynamic contact angle of the liquid material over a film made of the organic material is from 20° to 80°.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: May 21, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Mariko Kojima, Yoshihiro Norikane, Keiko Osaka, Hiroshi Iwata, Mitsuru Naruse, Nozomu Tamoto
  • Publication number: 20190126538
    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.
    Type: Application
    Filed: August 7, 2018
    Publication date: May 2, 2019
    Applicant: Ricoh Company, Ltd.
    Inventors: Takashi FUJITA, Akira SAITO, Kiichi KAMODA, Yasutada SHITARA, Kazuhiko WATANABE, Hitoshi IWATSUKI, Yuuya ENDOH, Kazufumi KIMURA, Yasuyuki YAMASHITA, Shinnosuke KOSHIZUKA, Yuuki KAMON, Nozomu TAMOTO