Patents by Inventor Akira Otomo

Akira Otomo 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: 20210032228
    Abstract: The present invention provides an electro-optic polymer (EO polymer) comprising an electro-optic molecule (EO molecule) and a base polymer. The EO polymer of the present invention has good performance over the entire optical communication wavelength range and therefore can preferably be used for the production of optical modulators, optical switches, optical transceivers, optical phased arrays, LiDAR (light detection and ranging) devices, electric field sensors, terahertz wave generators and detectors, etc.
    Type: Application
    Filed: January 30, 2019
    Publication date: February 4, 2021
    Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA, Chiyumi YAMADA
  • Publication number: 20210026221
    Abstract: The present disclosure provides a method for producing a laminate for non-linear optics.
    Type: Application
    Filed: August 23, 2018
    Publication date: January 28, 2021
    Applicant: National Institute of Information and Communications Technology
    Inventors: Takahiro KAJI, Yukihiro TOMINARI, Toshiki YAMADA, Akira OTOMO
  • Publication number: 20200407498
    Abstract: The purpose of the present invention is to provide: a novel polymer which has an electro-optical effect; a method for producing such a polymer; and a light control element which uses such a polymer. The present invention relates to a non-crosslinkable polycarbonate which contains a moiety that has electro-optical characteristics. The present invention also relates to a method for producing a polycarbonate, which comprises a step for reacting a bisphenol compound, a diol compound that has electro-optical characteristics, and a phosgene in the presence of an acid binding agent and solvent. The present invention also relates to a light control element which comprises such polycarbonate.
    Type: Application
    Filed: March 1, 2019
    Publication date: December 31, 2020
    Applicants: TEIJIN LIMITED, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Naoshi TAKAHASHI, Katsuhiro YAMANAKA, Akira OTOMO, Toshiki YAMADA
  • Patent number: 10754064
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: August 25, 2020
    Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
  • Publication number: 20190225728
    Abstract: An object of the present invention is to provide a novel electro-optic polymer. Another object of the present invention is to provide a novel electro-optic polymer with a low alicyclic methacrylate monomer content. The polymer according to the present invention is a polymer comprising (a) a base polymer having a reactive group (A), (b) an electro-optic molecule having a plurality of reactive groups (B), and a bond (C) formed by reaction of the reactive group (A) with the plurality of reactive groups (B), the bond (C) being at least one type of bond selected from the group consisting of a (thio)ester bond, a (thio)urethane bond, a (thio)urea bond and a (thio)amide bond.
    Type: Application
    Filed: June 28, 2017
    Publication date: July 25, 2019
    Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA
  • Patent number: 10253124
    Abstract: An object of the present invention is to provide an organic EO polymer having a desired Tg. The present invention provides a copolymer comprising (i) a cycloalkane methacrylate and 2-isocyanatoethyl methacrylate as monomers at an adjusted blending ratio and (ii) an electro-optic molecule (EO molecule) bound to the copolymer, thereby exhibiting a desired glass transition temperature (Tg).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: April 9, 2019
    Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Akira Otomo, Isao Aoki, Toshiki Yamada, Hideki Miki
  • Publication number: 20180224577
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Application
    Filed: April 3, 2018
    Publication date: August 9, 2018
    Applicants: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
  • Patent number: 9977150
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: May 22, 2018
    Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
    Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
  • Publication number: 20170088654
    Abstract: An object of the present invention is to provide an organic EO polymer having a desired Tg. The present invention provides a copolymer comprising (i) a cycloalkane methacrylate and 2-isocyanatoethyl methacrylate as monomers at an adjusted blending ratio and (ii) an electro-optic molecule (EO molecule) bound to the copolymer, thereby exhibiting a desired glass transition temperature (Tg).
    Type: Application
    Filed: March 17, 2015
    Publication date: March 30, 2017
    Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA, Hideki MIKI
  • Patent number: 9488755
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: November 8, 2016
    Assignees: National Institute of Information and Communications Technology, Sumitomo Electric Industries, Ltd., Kyushu University, National University Corporation
    Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
  • Publication number: 20160318889
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Application
    Filed: July 13, 2016
    Publication date: November 3, 2016
    Inventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
  • Publication number: 20150048284
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Application
    Filed: June 27, 2014
    Publication date: February 19, 2015
    Inventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
  • Patent number: 8846955
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: September 30, 2014
    Assignees: National Institute of Information and Communications Technology, Sumitomo Electric Industries, Ltd., Kyushu University, National University Corporation
    Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
  • Publication number: 20120172599
    Abstract: Problem to Be Solved: to provide a chromophore having a far superior nonlinear optical activity to conventional chromophores and to provide a nonlinear optical element comprising said chromophore. Solution: a chromophore comprising a donor structure D, a ?-conjugated bridge structure B, and an acceptor structure A, the donor structure D comprising an aryl group substituted with a substituted oxy group; and a nonlinear optical element comprising said chromophore.
    Type: Application
    Filed: August 24, 2010
    Publication date: July 5, 2012
    Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
  • Publication number: 20080076887
    Abstract: An object of the present invention is to provide a method of effectively producing a nano-particle and a nano-wire, and others. Specifically, the present invention provides a method of producing a molecular device including: the use of a molecular structure having a higher atomic density in the periphery than in the interior and bonding residues in the periphery; and a step of crosslinking the bonding residues, and the method of producing a molecular device according to claim 1, characterized in that the molecular structure is constituted by a skeleton portion having a skeleton structure, and a terminal portion which is arranged in the outer shell of the skeleton portion, has a higher atomic density than that of the skeleton portion and has bonding residues; and that in the step of crosslinking the bonding residues, the bonding residues in the terminal portion of the molecular structure are crosslinked to form the molecular structure into a shell structure, and others.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 27, 2008
    Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko
  • Publication number: 20080076869
    Abstract: An object of the present invention is to provide a method of effectively producing a nano-particle and a nano-wire, and others. Specifically, the present invention provides a method of producing a molecular device including: the use of a molecular structure having a higher atomic density in the periphery than in the interior and bonding residues in the periphery; and a step of crosslinking the bonding residues, and the method of producing a molecular device according to claim 1, characterized in that the molecular structure is constituted by a skeleton portion having a skeleton structure, and a terminal portion which is arranged in the outer shell of the skeleton portion, has a higher atomic density than that of the skeleton portion and has bonding residues; and that in the step of crosslinking the bonding residues, the bonding residues in the terminal portion of the molecular structure are crosslinked to form the molecular structure into a shell structure, and others.
    Type: Application
    Filed: September 12, 2007
    Publication date: March 27, 2008
    Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY
    Inventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko
  • Patent number: 7285604
    Abstract: An object of the present invention is to provide a method of effectively producing a nano-particle and a nano-wire, and others. Specifically, the present invention provides a method of producing a molecular device including: the use of a molecular structure having a higher atomic density in the periphery than in the interior and bonding residues in the periphery; and a step of crosslinking the bonding residues, and the method of producing a molecular device according to claim 1, characterized in that the molecular structure is constituted by a skeleton portion having a skeleton structure, and a terminal portion which is arranged in the outer shell of the skeleton portion, has a higher atomic density than that of the skeleton portion and has bonding residues; and that in the step of crosslinking the bonding residues, the bonding residues in the terminal portion of the molecular structure are crosslinked to form the molecular structure into a shell structure, and others.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: October 23, 2007
    Assignee: National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko
  • Publication number: 20050215731
    Abstract: An object of the present invention is to provide a method of effectively producing a nano-particle and a nano-wire, and others. Specifically, the present invention provides a method of producing a molecular device including: the use of a molecular structure having a higher atomic density in the periphery than in the interior and bonding residues in the periphery; and a step of crosslinking the bonding residues, and the method of producing a molecular device according to claim 1, characterized in that the molecular structure is constituted by a skeleton portion having a skeleton structure, and a terminal portion which is arranged in the outer shell of the skeleton portion, has a higher atomic density than that of the skeleton portion and has bonding residues; and that in the step of crosslinking the bonding residues, the bonding residues in the terminal portion of the molecular structure are crosslinked to form the molecular structure into a shell structure, and others.
    Type: Application
    Filed: March 26, 2003
    Publication date: September 29, 2005
    Inventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko