Patents by Inventor Hidekazu Yaginuma

Hidekazu Yaginuma 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).

  • Patent number: 10509290
    Abstract: An electrochromic apparatus includes a first substrate, a first electrode layer, an electrochromic layer, an electrolyte layer, a second substrate, a second electrode layer, a first extraction electrode layer, a second extraction electrode layer, and a partition wall. The first extraction electrode layer contacts the first electrode layer and is isolated from the second electrode layer and the electrochromic layer. The second extraction electrode layer contacts the second electrode layer and is isolated from the first electrode layer and the electrolyte layer. The partition wall is electrically insulative and sandwiched between the first extraction electrode layer and the electrolyte layer and between the second extraction electrode layer and the electrolyte layer.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: December 17, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Sukchan Kim, Tohru Yashiro, Hidekazu Yaginuma, Yoshihisa Naijo, Kohji Takeuchi, Yasuhiro Takahashi, Atsushi Ohshima
  • Patent number: 10495937
    Abstract: To provide an electrochromic device, including a laminated body, which includes: at least one support; a first electrode layer on the support; an electrochromic layer on the first electrode layer; a second electrode layer disposed to face the first electrode layer; and an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer, the at least one support including a resin substrate, and the laminated body having a desired curve formed by thermoforming.
    Type: Grant
    Filed: November 17, 2015
    Date of Patent: December 3, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tohru Yashiro, Keiichiroh Yutani, Sukchan Kim, Satoshi Yamamoto, Takahiko Matsumoto, Fuminari Kaneko, Hidekazu Yaginuma, Mamiko Inoue
  • Publication number: 20190309257
    Abstract: Provided is a method for producing a cell locating plate, including: a step of laminating a structural layer over a plane of a base material, the structural layer being a layer that is formed of a cell non-adhesive material and in which a plurality of holes are formed; a step of coating a coating liquid in the holes and over the plane of the base material exposed through the holes; and a step of discharging a cell suspension onto the plane coated with the coating liquid.
    Type: Application
    Filed: April 4, 2019
    Publication date: October 10, 2019
    Inventors: Tomoyuki Aratani, Chihiro Kubo, Hidekazu Yaginuma, Naoki Satoh
  • Publication number: 20190284524
    Abstract: Provided is a cell tissue producing method including: a cell adhesive portion forming step of forming a cell adhesive portion formed of a cell adhesive material and having a predetermined shape at a predetermined position over a substrate having a cell non-adhesive surface; and a cell locating step of discharging a cell suspension containing at least cells and a cell drying inhibitor onto the cell adhesive portion in the form of a liquid droplet to locate the cells.
    Type: Application
    Filed: March 12, 2019
    Publication date: September 19, 2019
    Inventors: Hidekazu YAGINUMA, Naoki SATOH, Tomoyuki ARATANI, Chihiro KUBO, Daisuke TAKAGI, Momoko SHIONOIRI, Natsuko IWASHITA
  • Patent number: 10281793
    Abstract: An electrochromic dimming device is provided. The electrochromic dimming device includes an electrochromic element, a color development power source, a color discharge powder source, and a variable resistance. The color development power source supplies electric power to the electrochromic element when the electrochromic element develops color. The color discharge powder source supplies electric power to the electrochromic element when the electrochromic element discharges color. The variable resistance is disposed on a first current path without being disposed on a second current path. The first current path is formed from the color development power source through a ground via the electrochromic element, and the second current path is formed from the color discharge power source to the ground via the electrochromic element.
    Type: Grant
    Filed: May 16, 2016
    Date of Patent: May 7, 2019
    Assignee: RICOH COMPANY, LTD.
    Inventors: Atsushi Ohshima, Shigenobu Hirano, Keiichiroh Yutani, Takahiko Matsumoto, Hidekazu Yaginuma, Kazuaki Tsuji, Sukchan Kim, Yasuo Katano, Kohji Takeuchi, Shun Goto, Tohru Hasegawa, Hiroaki Kobayashi
  • Patent number: 10126623
    Abstract: An electrochromic device including: first substrate; first electrode-layer on the first substrate; electrochromic layer on the first electrode-layer; second substrate facing the first substrate; second electrode-layer formed on surface of the second substrate at side of the first substrate; electrolyte layer formed between the electrochromic layer and the second electrode-layer and curable at least with ultraviolet rays; first extraction electrode to electrically connect between the first electrode-layer and power source and including region that does not transmit ultraviolet rays in at least part of the first extraction electrode; and second extraction electrode to electrically connect between the second electrode-layer and the power source and including region that does not transmit ultraviolet rays in at least part of the second extraction electrode, the region in the first extraction electrode and the region in the second extraction electrode being arranged not to overlap with each other.
    Type: Grant
    Filed: December 8, 2016
    Date of Patent: November 13, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Shun Goto, Tohru Yashiro, Kohji Takeuchi, Sukchan Kim, Takahiko Matsumoto, Keiichiroh Yutani, Hidekazu Yaginuma, Yasuo Katano, Atsushi Ohshima
  • Publication number: 20180299740
    Abstract: Provided is an electrochromic device including an electrochromic element including a protrusion on a periphery of the electrochromic element, and a frame holding the electrochromic element, wherein the protrusion includes an electrode pad, and the frame includes a connecting member configured to electrically connect to the electrode pad.
    Type: Application
    Filed: June 13, 2018
    Publication date: October 18, 2018
    Inventors: Kohji TAKEUCHI, Tohru Yashiro, Takahiko Matsumoto, Sukchan Kim, Shun Goto, Keiichiroh Yutani, Hidekazu Yaginuma, Atsushi Ohshima
  • Publication number: 20180231857
    Abstract: An electrochromic apparatus includes a first substrate, a first electrode layer, an electrochromic layer, an electrolyte layer, a second substrate, a second electrode layer, a first extraction electrode layer, a second extraction electrode layer, and a partition wall. The first extraction electrode layer contacts the first electrode layer and is isolated from the second electrode layer and the electrochromic layer. The second extraction electrode layer contacts the second electrode layer and is isolated from the first electrode layer and the electrolyte layer. The partition wall is electrically insulative and sandwiched between the first extraction electrode layer and the electrolyte layer and between the second extraction electrode layer and the electrolyte layer.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 16, 2018
    Inventors: Sukchan KIM, Tohru Yashiro, Hidekazu Yaginuma, Yoshihisa Naijo, Kohji Takeuchi, Yasuhiro Takahashi, Atsushi Ohshima
  • Publication number: 20180113366
    Abstract: An electrochromic element includes first and second display electrodes arranged at intervals and opposed to each other, at least one of the first and second display electrodes being transparent; an electrolyte provided between the first and second display electrodes; a first electrochromic layer including at least one of an oxidized electrochromic compound and an oxidized electrochromic composition, and contacting the first display electrode and the electrolyte; a second electrochromic layer including at least one of a reduced electrochromic compound and a reduced electrochromic composition, and contacting the second display electrode and the electrolyte; third and fourth auxiliary electrodes contacting the electrolyte; a reduction layer provided on the third auxiliary electrode and including a reductant of a first material; and an oxidation layer provided on the fourth auxiliary electrode and including an oxidant of a second material. The first and second materials can be oxidized and reduced reversibly.
    Type: Application
    Filed: May 12, 2016
    Publication date: April 26, 2018
    Applicant: Ricoh Company, Ltd.
    Inventors: Fuminari KANEKO, Koh FUJIMURA, Hidekazu YAGINUMA, Keiichiroh YUTANI, Takahiko MATSUMOTO, Mamiko INOUE, Tohru YASHIRO
  • Patent number: 9891497
    Abstract: To provide an electrochromic device including: a support; a first electrode formed on the support; a second electrode facing the first electrode, where through-holes are formed in the second electrode; an electrochromic layer disposed in a space between the first electrode and the second electrode; a first electrolyte layer disposed in the space between the first electrode and the second electrode; a second electrolyte layer disposed to communicate with the first electrolyte layer through the through-holes; an inorganic protective layer, which is disposed on a surface of the second electrolyte layer not facing the second electrode, and is configured to shield oxygen and water vapor; and an organic protective layer disposed on a surface of the inorganic protective layer that does not face the second electrolyte layer.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: February 13, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Tohru Yashiro, Kohji Takeuchi, Sukchan Kim, Shun Goto, Yuuma Usui, Yasuo Katano, Satoshi Yamamoto, Daisuke Goto, Toshiya Sagisaka, Masato Shinoda, Mamiko Inoue, Fuminari Kaneko, Hidekazu Yaginuma, Takahiko Matsumoto, Keiichiroh Yutani, Tamotsu Horiuchi, Hiroyuki Takahashi
  • Patent number: 9869918
    Abstract: An electrochromic apparatus including a first support, a first electrode, a first transparent conductive layer, an electrochromic layer, a second support, a second electrode, a second transparent conductive layer, and an electrolyte layer is provided. The first and second supports have first and second surfaces, respectively, on each of which a plurality of grooves is formed. The grooves on the second surface are facing the grooves on the first surface. The first and second electrodes are disposed at each one of the plurality of grooves of the first and second supports, respectively. The first and second transparent conductive layers are in contact with the first and second surfaces, respectively. The electrochromic layer is in contact with the first transparent conductive layer. The electrolyte layer is between the electrochromic layer and the second transparent conductive layer.
    Type: Grant
    Filed: January 6, 2016
    Date of Patent: January 16, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Takahiko Matsumoto, Keiichiroh Yutani, Hidekazu Yaginuma, Koh Fujimura, Fuminari Kaneko, Mamiko Inoue, Sukchan Kim, Satoshi Yamamoto, Tohru Yashiro
  • Publication number: 20170329197
    Abstract: To provide an electrochromic device, including a laminated body, which includes: at least one support; a first electrode layer on the support; an electrochromic layer on the first electrode layer; a second electrode layer disposed to face the first electrode layer; and an electrolyte layer, which fills between the first electrode layer and the second electrode layer, and is on the electrochromic layer, the at least one support including a resin substrate, and the laminated body having a desired curve formed by thermoforming.
    Type: Application
    Filed: November 17, 2015
    Publication date: November 16, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Tohru YASHIRO, Keiichiroh YUTANI, Sukchan KIM, Satoshi YAMAMOTO, Takahiko MATSUMOTO, Fuminari KANEKO, Hidekazu YAGINUMA, Mamiko INOUE
  • Publication number: 20170176833
    Abstract: An electrochromic device including: first substrate; first electrode-layer on the first substrate; electrochromic layer on the first electrode-layer; second substrate facing the first substrate; second electrode-layer formed on surface of the second substrate at side of the first substrate; electrolyte layer formed between the electrochromic layer and the second electrode-layer and curable at least with ultraviolet rays; first extraction electrode to electrically connect between the first electrode-layer and power source and including region that does not transmit ultraviolet rays in at least part of the first extraction electrode; and second extraction electrode to electrically connect between the second electrode-layer and the power source and including region that does not transmit ultraviolet rays in at least part of the second extraction electrode, the region in the first extraction electrode and the region in the second extraction electrode being arranged not to overlap with each other.
    Type: Application
    Filed: December 8, 2016
    Publication date: June 22, 2017
    Applicant: RICOH COMPANY, LTD.
    Inventors: Shun GOTO, Tohru YASHIRO, Kohji TAKEUCHI, Sukchan KIM, Takahiko MATSUMOTO, Keiichiroh YUTANI, Hidekazu YAGINUMA, Yasuo KATANO, Atsushi OHSHIMA
  • Publication number: 20170010514
    Abstract: To provide an electrochromic device including: a support; a first electrode formed on the support; a second electrode facing the first electrode, where through-holes are formed in the second electrode; an electrochromic layer disposed in a space between the first electrode and the second electrode; a first electrolyte layer disposed in the space between the first electrode and the second electrode; a second electrolyte layer disposed to communicate with the first electrolyte layer through the through-holes; an inorganic protective layer, which is disposed on a surface of the second electrolyte layer not facing the second electrode, and is configured to shield oxygen and water vapor; and an organic protective layer disposed on a surface of the inorganic protective layer that does not face the second electrolyte layer.
    Type: Application
    Filed: June 23, 2016
    Publication date: January 12, 2017
    Applicant: Ricoh Company, Ltd.
    Inventors: Tohru YASHIRO, Kohji TAKEUCHI, Sukchan KIM, Shun GOTO, Yuuma USUI, Yasuo KATANO, Satoshi YAMAMOTO, Daisuke GOTO, Toshiya SAGISAKA, Masato SHINODA, Mamiko INOUE, Fuminari KANEKO, Hidekazu YAGINUMA, Takahiko MATSUMOTO, Keiichiroh YUTANI, Tamotsu HORIUCHI, Hiroyuki TAKAHASHI
  • Publication number: 20160349590
    Abstract: An electrochromic dimming device is provided. The electrochromic dimming device includes an electrochromic element, a color development power source, a color discharge powder source, and a variable resistance. The color development power source supplies electric power to the electrochromic element when the electrochromic element develops color. The color discharge powder source supplies electric power to the electrochromic element when the electrochromic element discharges color. The variable resistance is disposed on a first current path without being disposed on a second current path. The first current path is formed from the color development power source through a ground via the electrochromic element, and the second current path is formed from the color discharge power source to the ground via the electrochromic element.
    Type: Application
    Filed: May 16, 2016
    Publication date: December 1, 2016
    Applicant: Ricoh Company, Ltd.
    Inventors: Atsushi OHSHIMA, Shigenobu Hirano, Keiichiroh Yutani, Takahiko Matsumoto, Hidekazu Yaginuma, Kazuaki Tsuji, Sukchan Kim, Yasuo Katano, Kohji Takeuchi, Shun Goto, Tohru Hasegawa, Hiroaki Kobayashi
  • Publication number: 20160209721
    Abstract: An electrochromic apparatus including a first support, a first electrode, a first transparent conductive layer, an electrochromic layer, a second support, a second electrode, a second transparent conductive layer, and an electrolyte layer is provided. The first and second supports have first and second surfaces, respectively, on each of which a plurality of grooves is formed. The grooves on the second surface are facing the grooves on the first surface. The first and second electrodes are disposed at each one of the plurality of grooves of the first and second supports, respectively. The first and second transparent conductive layers are in contact with the first and second surfaces, respectively. The electrochromic layer is in contact with the first transparent conductive layer. The electrolyte layer is between the electrochromic layer and the second transparent conductive layer.
    Type: Application
    Filed: January 6, 2016
    Publication date: July 21, 2016
    Inventors: Takahiko Matsumoto, Keiichiroh Yutani, Hidekazu Yaginuma, Koh Fujimura, Fuminari Kaneko, Mamiko Inoue, Sukchan Kim, Satoshi Yamamoto, Tohru Yashiro
  • Patent number: 8900784
    Abstract: To provide a toner which contains a binder resin, a colorant, and capsules, wherein the binder resin contains a thermoplastic elastomer, and wherein the capsules each encapsulate a plasticizer capable of softening the thermoplastic elastomer and the capsules are fractured upon application of predetermined pressure.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: December 2, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Yukimichi Someya, Shinji Tezuka, Fuminari Kaneko, Kohji Takeuchi, Kohji Matsuoka, Takuma Nakamura, Tsuneo Kurotori, Hidekazu Yaginuma
  • Publication number: 20140340443
    Abstract: An image formation apparatus includes an application part configured to apply a first solvent onto a recording medium and a jetting part configured to jet an ink-jet ink to be attached to the first solvent applied on the recording medium, wherein the ink-jet ink includes a second solvent, a resin, and a coloring material, wherein the second solvent is soluble in the first solvent and the resin is insoluble in the first solvent and soluble in the second solvent.
    Type: Application
    Filed: May 8, 2014
    Publication date: November 20, 2014
    Applicant: RICOH COMPANY, LTD.
    Inventors: Yasuo KATANO, Shinji TEZUKA, Yukimichi SOMEYA, Fuminari KANEKO, Kohji TAKEUCHI, Hidekazu YAGINUMA
  • Patent number: 8693939
    Abstract: A disclosed fixing device includes a fixer application unit configured to apply a fixer containing a softener, capable of softening resin by dissolving or swelling at least a part of the resin, and water to resin particles formed on a recording medium such that the resin particles are fixed on the recording medium. The fixing unit may further include an anti-tack agent application unit configured to apply a liquid anti-tack agent immiscible with the softener to surfaces of the resin particles that are mixed with the softener by the application of the fixer containing the softener.
    Type: Grant
    Filed: January 11, 2011
    Date of Patent: April 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidenori Tomono, Yasuo Katano, Yukimichi Someya, Tsuneo Kurotori, Yuko Arizumi, Shigenobu Hirano, Hidekazu Yaginuma, Shigeo Takeuchi, Fuminari Kaneko
  • Patent number: 8663893
    Abstract: To provide a fixing solution for fixing fine resin particles to a recording medium, the fixing solution including: a diluent which contains water; a foaming agent which allows the fixing solution to be in the form of foam; and plasticizers which soften or swell at least part of the fine resin particles, wherein the plasticizers contain a liquid plasticizer which is liquid at normal temperature and soluble in the diluent, and a solid plasticizer which is solid at normal temperature and soluble in the diluent.
    Type: Grant
    Filed: July 1, 2010
    Date of Patent: March 4, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasuo Katano, Tsuneo Kurotori, Yukimichi Someya, Fuminari Kaneko, Yuko Arizumi, Shigeo Takeuchi, Shigenobu Hirano, Hidenori Tomono, Hidekazu Yaginuma