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).
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Publication number: 20230367084Abstract: The present disclosure provides an optical control element having an optical waveguide formed of an electro-optic material, and methods of use thereof.Type: ApplicationFiled: August 20, 2021Publication date: November 16, 2023Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira OTOMO, Kouichi TANAKA, Toshiki YAMADA, Chiyumi YAMADA, Shun KAMADA, Rieko UEDA
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Publication number: 20230330955Abstract: A method of producing a nonlinear optical device is provided. In a surface of a semiconductor substrate, a recessed part is formed. In an environment under reduced pressure, the first liquid material is filled into the recessed part. A second liquid material is brought into contact with a first liquid material filled in the recessed part, and thereby a third liquid material is prepared. The third liquid material is solidified, and thereby an embedded portion is formed. The first liquid material includes a first solute and a first solvent, or the first liquid material consists of the first solvent. The second liquid material includes a second solute and a second solvent. The second solute includes a nonlinear optical polymer. The concentration of the second solute in the second liquid material is higher than the concentration of the first solute in the first liquid material.Type: ApplicationFiled: July 14, 2021Publication date: October 19, 2023Applicants: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD.Inventors: Hidehisa TAZAWA, Yasunori MURAKAMI, Akira OTOMO, Toshiki YAMADA, Hideo YOKOHAMA, Rieko UEDA
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Patent number: 11236188Abstract: 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: GrantFiled: June 28, 2017Date of Patent: February 1, 2022Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira Otomo, Isao Aoki, Toshiki Yamada
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Patent number: 11194225Abstract: The present disclosure provides a method for producing a laminate for non-linear optics.Type: GrantFiled: August 23, 2018Date of Patent: December 7, 2021Assignee: National Institute of Information and Communications TechnologyInventors: Takahiro Kaji, Yukihiro Tominari, Toshiki Yamada, Akira Otomo
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Publication number: 20210032228Abstract: 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: ApplicationFiled: January 30, 2019Publication date: February 4, 2021Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA, Chiyumi YAMADA
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Publication number: 20210026221Abstract: The present disclosure provides a method for producing a laminate for non-linear optics.Type: ApplicationFiled: August 23, 2018Publication date: January 28, 2021Applicant: National Institute of Information and Communications TechnologyInventors: Takahiro KAJI, Yukihiro TOMINARI, Toshiki YAMADA, Akira OTOMO
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Publication number: 20200407498Abstract: 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: ApplicationFiled: March 1, 2019Publication date: December 31, 2020Applicants: TEIJIN LIMITED, NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Naoshi TAKAHASHI, Katsuhiro YAMANAKA, Akira OTOMO, Toshiki YAMADA
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Patent number: 10754064Abstract: 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: GrantFiled: April 3, 2018Date of Patent: August 25, 2020Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
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Publication number: 20190225728Abstract: 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: ApplicationFiled: June 28, 2017Publication date: July 25, 2019Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA
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Patent number: 10253124Abstract: 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: GrantFiled: March 17, 2015Date of Patent: April 9, 2019Assignee: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira Otomo, Isao Aoki, Toshiki Yamada, Hideki Miki
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Publication number: 20180224577Abstract: 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: ApplicationFiled: April 3, 2018Publication date: August 9, 2018Applicants: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
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Patent number: 9977150Abstract: 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: GrantFiled: July 13, 2016Date of Patent: May 22, 2018Assignees: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY, SUMITOMO ELECTRIC INDUSTRIES, LTD., KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATIONInventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
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Publication number: 20170088654Abstract: 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: ApplicationFiled: March 17, 2015Publication date: March 30, 2017Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Akira OTOMO, Isao AOKI, Toshiki YAMADA, Hideki MIKI
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Patent number: 9488755Abstract: 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: GrantFiled: June 27, 2014Date of Patent: November 8, 2016Assignees: National Institute of Information and Communications Technology, Sumitomo Electric Industries, Ltd., Kyushu University, National University CorporationInventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
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Publication number: 20160318889Abstract: 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: ApplicationFiled: July 13, 2016Publication date: November 3, 2016Inventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
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Publication number: 20150048284Abstract: 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: ApplicationFiled: June 27, 2014Publication date: February 19, 2015Inventors: Akira OTOMO, Isao AOKI, Hideki MIKI, Hidehisa TAZAWA, Shiyoshi YOKOYAMA
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Patent number: 8846955Abstract: 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: GrantFiled: August 24, 2010Date of Patent: September 30, 2014Assignees: National Institute of Information and Communications Technology, Sumitomo Electric Industries, Ltd., Kyushu University, National University CorporationInventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
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Publication number: 20120172599Abstract: 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: ApplicationFiled: August 24, 2010Publication date: July 5, 2012Inventors: Akira Otomo, Isao Aoki, Hideki Miki, Hidehisa Tazawa, Shiyoshi Yokoyama
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Publication number: 20080076869Abstract: 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: ApplicationFiled: September 12, 2007Publication date: March 27, 2008Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko
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Publication number: 20080076887Abstract: 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: ApplicationFiled: September 12, 2007Publication date: March 27, 2008Applicant: NATIONAL INSTITUTE OF INFORMATION AND COMMUNICATIONS TECHNOLOGYInventors: Seiichi Furumi, Akira Otomo, Shinro Mashiko