Patents by Inventor Ryojiro Akashi

Ryojiro Akashi 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: 11667769
    Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: June 6, 2023
    Assignee: SHIN-NAKAMURA CHEMICAL CO., LTD.
    Inventors: Ryojiro Akashi, Takuro Nishimoto, Toshikazu Saeki
  • Publication number: 20210403683
    Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Applicant: SHIN-NAKAMURA CHEMICAL CO., LTD.
    Inventors: Ryojiro AKASHI, Takuro NISHIMOTO, Toshikazu SAEKI
  • Patent number: 11149132
    Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: October 19, 2021
    Assignee: SHIN-NAKAMURA CHEMICAL CO., LTD.
    Inventors: Ryojiro Akashi, Takuro Nishimoto, Toshikazu Saeki
  • Publication number: 20210087364
    Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.
    Type: Application
    Filed: June 5, 2019
    Publication date: March 25, 2021
    Applicant: SHIN-NAKAMURA CHEMICAL CO., LTD.
    Inventors: Ryojiro AKASHI, Takuro NISHIMOTO, Toshikazu SAEKI
  • Patent number: 9845397
    Abstract: A method for producing a binder resin by a reaction of a cellulose derivative, a polyvinyl acetal, and a bonding agent that has in the molecule at least two functional groups that can react to hydroxyl groups in the polyvinyl acetal and the cellulose derivative. In the production method, the content of the bonding agent is at least double the molar quantity of whichever has the greater number of moles between the polyvinyl acetal and the cellulose derivative. The produced binder resin is favorable in a coating paste such as a conductive paste, and causes an improvement in film quality such as the smoothness and denseness of a coating film formed by the paste.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: December 19, 2017
    Assignee: SHOEI CHEMICAL INC.
    Inventors: Ryojiro Akashi, Tomoko Uchida
  • Publication number: 20160326381
    Abstract: Disclosed is a method for producing a binder resin by means of a reaction of a cellulose derivative, a polyvinyl acetal, and a bonding agent that has in the molecule at least two functional groups that can react to hydroxyl groups in the polyvinyl acetal and the cellulose derivative. In the production method, the content of the bonding agent is at least double the molar quantity of whichever has the greater number of moles between the polyvinyl acetal and the cellulose derivative. The produced binder resin is favorable in a coating paste such as a conductive paste, and causes an improvement in film quality such as the smoothness and denseness of a coating film formed by means of the paste.
    Type: Application
    Filed: December 11, 2014
    Publication date: November 10, 2016
    Inventors: Ryojiro Akashi, Tomoko Uchida
  • Patent number: 8730559
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Grant
    Filed: August 1, 2011
    Date of Patent: May 20, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 8477404
    Abstract: A display medium includes: a pair of substrates having electrodes and disposed to form a space therebetween, at least one of the substrates transmitting light; a dispersion medium enclosed between the substrates; a group of particles that is dispersed in the dispersion medium and that moves in the dispersion medium according to an electric field applied between the substrates; and a treatment layer provided on at least one of surfaces of the substrates that oppose each other, the treatment layer being formed by treating the at least one of surfaces of the substrates that oppose each other with a polymer compound having a silicone chain.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: July 2, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroaki Moriyama, Yoshinori Machida, Yasuo Yamamoto, Ryojiro Akashi, Akira Imai
  • Patent number: 8300300
    Abstract: A particle for a display includes a colored particle containing a colorant and a polymer having a chargeable group; and a polymer gel layer that covers a surface of the colored particle and contains a polymer gel.
    Type: Grant
    Filed: March 5, 2009
    Date of Patent: October 30, 2012
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Akira Imai, Hiroaki Moriyama, Satoshi Tatsuura, Yoshinori Yamaguchi
  • Patent number: 8068270
    Abstract: Particles for display including a colorant, a first polymer gel having a charging group and a second polymer compound having a hydrophilic group, the first polymer gel and the second polymer compound forming an IPN structure or a semi-IPN structure.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: November 29, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama, Jun Kawahara
  • Publication number: 20110279885
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Application
    Filed: August 1, 2011
    Publication date: November 17, 2011
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 8023176
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: September 20, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 7990602
    Abstract: A display medium includes: a pair of substrates; an electrode arranged between the pair of substrates and on one substrate of the pair of substrates; a multilayered structure including plural color-forming layers arranged between one substrate of the pair of substrates and the electrode, each of the plural color-forming layers containing an electroconductive sheet-like porous body and an electrochromic dye which is retained by the porous body and is reversibly colored or decolored by at least one of an electrochemical oxidation reaction or a reduction reaction, and the colors when the electrochromic dyes in the respective plural color-forming layers are colored being different from one another; and an electrolytic material included in a region between the pair of substrates.
    Type: Grant
    Filed: November 12, 2009
    Date of Patent: August 2, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Tatsuura, Ryojiro Akashi, Naoki Hiji
  • Patent number: 7944596
    Abstract: A display medium is provided. The display medium includes a pair of electrodes disposed so as to have a gap therebetween, an electrolyte disposed between the pair of electrodes, an electroconductive porous layer disposed at least one of the pair of electrodes at the side facing the other electrode, a first electrochromic dye held by the porous layer, a second electrochromic dye dispersed in the electrolyte and forming a color different from the color of the first electrochromic dye. Both the first electrochromic dye and the second electrochromic dye are oxidation dyes which form colors by an electrochemical oxidation reaction and are rendered color-faded by an electrochemical reduction reaction, or reduction dyes which form colors by an electrochemical reduction reaction and are rendered color-faded by an electrochemical reduction reaction.
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: May 17, 2011
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Tatsuura, Ryojiro Akashi, Yoshinori Machida, Kiyoshi Shigehiro
  • Publication number: 20100309538
    Abstract: A display medium includes: a pair of substrates; an electrode arranged between the pair of substrates and on one substrate of the pair of substrates; a multilayered structure including plural color-forming layers arranged between one substrate of the pair of substrates and the electrode, each of the plural color-forming layers containing an electroconductive sheet-like porous body and an electrochromic dye which is retained by the porous body and is reversibly colored or decolored by at least one of an electrochemical oxidation reaction or a reduction reaction, and the colors when the electrochromic dyes in the respective plural color-forming layers are colored being different from one another; and an electrolytic material included in a region between the pair of substrates.
    Type: Application
    Filed: November 12, 2009
    Publication date: December 9, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi TATSUURA, Ryojiro AKASHI, Naoki HIJI
  • Publication number: 20100245982
    Abstract: Particles for display including a colorant, a first polymer gel having a charging group and a second polymer compound having a hydrophilic group, the first polymer gel and the second polymer compound forming an IPN structure or a semi-IPN structure.
    Type: Application
    Filed: August 31, 2009
    Publication date: September 30, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ryojiro AKASHI, Daisuke NAKAYAMA, Jun KAWAHARA
  • Patent number: 7796323
    Abstract: A display particle includes: a colored particle including a polymer having a charging group and a colorant; and a reactive silicone polymer or a reactive long-chain alkyl polymer, the polymer being bound to or covering the surface of the colored particle.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: September 14, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Jun Kawahara
  • Publication number: 20100188732
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Application
    Filed: March 17, 2010
    Publication date: July 29, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Patent number: 7746542
    Abstract: The present invention provides a multicolor display optical composition comprising a dispersion medium, a periodic structure having a porous structure inside communicated with the outside, and mobile particles contained in the dispersion medium so as to be movable and having a volume average primary particle diameter from 1 nm to 80 nm in a dispersion state in the dispersion medium, a volume average particle diameter of coagulated particles of 100 nm or larger in optical coagulation state by stimulation application, and having a refractive index different from that of the dispersion medium by 0.1 or more, wherein the mobile particles show no coloration in the dispersion state when the particles are dispersed in the dispersion medium and show white coloration with a predetermined whiteness value or higher in the coagulation state when the particles are coagulated, an optical device, and a display method of the optical device.
    Type: Grant
    Filed: May 22, 2006
    Date of Patent: June 29, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Ryojiro Akashi, Daisuke Nakayama
  • Publication number: 20100142027
    Abstract: A display medium is provided. The display medium includes a pair of electrodes disposed so as to have a gap therebetween, an electrolyte disposed between the pair of electrodes, an electroconductive porous layer disposed at least one of the pair of electrodes at the side facing the other electrode, a first electrochromic dye held by the porous layer, a second electrochromic dye dispersed in the electrolyte and forming a color different from the color of the first electrochromic dye. Both the first electrochromic dye and the second electrochromic dye are oxidation dyes which form colors by an electrochemical oxidation reaction and are rendered color-faded by an electrochemical reduction reaction, or reduction dyes which form colors by an electrochemical reduction reaction and are rendered color-faded by an electrochemical reduction reaction.
    Type: Application
    Filed: April 29, 2009
    Publication date: June 10, 2010
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi TATSUURA, Ryojiro AKASHI, Yoshinori MACHIDA, Kiyoshi SHIGEHIRO