Patents by Inventor Chihiro Kondo
Chihiro Kondo 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: 20200361186Abstract: There is provided a fiber-reinforced body comprising a fiber component; a matrix component; and a sheet component, wherein the matrix component and the sheet component exhibit an interpenetrating ability; and a member comprising said fiber-reinforced body. The fiber-reinforced body is excellent in terms of bending impact resistance.Type: ApplicationFiled: July 13, 2018Publication date: November 19, 2020Applicants: THE UNIVERSITY OF TOKYO, DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Zaoyang LI, Isamu OHSAWA, Hiroaki ZUSHI, Jun TAKAHASHI, Shinji NARUSE, Tatsushi FUJIMORI, Koichi UKIGAYA, Chihiro KONDO, Toshitsugu MATSUKI
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Patent number: 10836112Abstract: Provided is a method for producing a laminate, comprising laminating an aramid paper sheet and a polyimide film together by performing heating and pressurizing process under conditions of a temperature of 275 to 320° C. and a pressure of 50 to 400 kgf/cm. In the present invention, an aramid paper sheet-polyimide film laminate with excellent heat resistance, electrical properties, chemical resistance, mechanical properties, and the like can be manufactured by laminating the aramid paper sheet and the polyimide film in a simple method without impairing their properties.Type: GrantFiled: February 8, 2017Date of Patent: November 17, 2020Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Koichi Ukigaya, Tatsushi Fujimori, Shinji Naruse, Chihiro Kondo, Yasunori Tanaka
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Patent number: 10654247Abstract: The present invention provides an electromagnetic wave suppression sheet provided with: an absorption layer which has surface resistivity of at least 100?/? and which contains an electrical conductive material and an insulating material in the state where the electrical conductive material and the insulating material are in direct contact with each other, the insulating material having a dielectric loss tangent of 0.01 or larger at a frequency of 60 Hz at 20° C.; and a contact layer which is formed on a surface, of the absorption layer, opposite to a surface to be irradiated with electromagnetic waves and of which a surface in contact with the absorption layer has surface resistivity of at least 20?/?.Type: GrantFiled: November 20, 2017Date of Patent: May 19, 2020Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Koichi Ukigaya, Chihiro Kondo, Yasunori Tanaka
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Publication number: 20200061966Abstract: The present invention provides an electromagnetic wave suppression sheet provided with: an absorption layer which has surface resistivity of at least 100 ?/? and which contains an electrical conductive material and an insulating material in the state where the electrical conductive material and the insulating material are in direct contact with each other, the insulating material having a dielectric loss tangent of 0.01 or larger at a frequency of 60 Hz at 20° C.; and a contact layer which is formed on a surface, of the absorption layer, opposite to a surface to be irradiated with electromagnetic waves and of which a surface in contact with the absorption layer has surface resistivity of at least 20 ?/?.Type: ApplicationFiled: November 20, 2017Publication date: February 27, 2020Applicant: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji NARUSE, Tatsushi FUJIMORI, Koichi UKIGAYA, Chihiro KONDO, Yasunori TANAKA
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Patent number: 10568822Abstract: Provided is a new application for D-pantothenyl alcohol. It is a melanogenesis inhibitor comprising D-pantothenyl alcohol.Type: GrantFiled: April 2, 2015Date of Patent: February 25, 2020Assignee: POLA CHEMICAL INDUSTRIES, INC.Inventors: Chihiro Kondo, Shoko Sassa, Yuko Saitoh, Yasuhito Mori, Kouji Yokoyama
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Publication number: 20190061270Abstract: Provided is a method for producing a laminate, comprising laminating an aramid paper sheet and a polyimide film together by performing heating and pressurizing process under conditions of a temperature of 275 to 320° C. and a pressure of 50 to 400 kgf/cm. In the present invention, an aramid paper sheet-polyimide film laminate with excellent heat resistance, electrical properties, chemical resistance, mechanical properties, and the like can be manufactured by laminating the aramid paper sheet and the polyimide film in a simple method without impairing their properties.Type: ApplicationFiled: February 8, 2017Publication date: February 28, 2019Applicant: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Koichi UKIGAYA, Tatsushi FUJIMORI, Shinji NARUSE, Chihiro KONDO, Yasunori TANAKA
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Patent number: 10173403Abstract: Provided is an a aramid-resin film laminate comprising an aramid paper comprising an aramid fibrid and an aramid short fiber, and a resin film laminated on each other. The aramid-resin film laminate is obtained by conducting a plasma treatment on a surface of the aramid paper, the surface having a skin layer portion whose heat of fusion measured with a differential scanning calorimeter (DSC) is 25 cal/g or less, and bonding the aramid paper and the resin film to each other by heating, pressing, or heating under pressure, with the plasma treated surface of the aramid paper and a plasma treated surface of the resin film facing each other. This laminate is an aramid-resin film laminate in which the aramid paper and the resin film are laminated on each other without using any adhesive agent and without impairing characteristics of both the aramid paper and the resin film, and is excellent in heat resistance, electrical characteristics, chemical resistance, mechanical characteristics, and the like.Type: GrantFiled: April 16, 2013Date of Patent: January 8, 2019Assignees: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD., KAWAMURA SANGYO CO., LTD.Inventors: Tatsushi Fujimori, Shinji Naruse, Chihiro Kondo, Yoshihiko Kagetani, Hisashi Katsumata, Masashi Kato
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Patent number: 10050486Abstract: A motor bobbin having a bobbin body portion around which a coil is to be wound, and flange portions provided integrally to both end portions of the bobbin body portion. The bobbin includes: a molded resin article formed by using a polymer having amide linkages, and an insulating paper having an aramid paper made of an aramid fibrid and an aramid short fiber. The surface of the molded resin article and the aramid paper are directly bonded to each other. The motor bobbin can cope with an increased efficiency and an increased power output of a motor generator or the like.Type: GrantFiled: March 6, 2013Date of Patent: August 14, 2018Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Chihiro Kondo, Yasunori Tanaka
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Patent number: 9903073Abstract: Disclosed is colored aramid paper which comprises aramid paper comprising aramid fibrids and short aramid fibers and, formed on at least one surface thereof, a colored layer comprising a colorant and a binder, wherein the colored layer has a surface resistivity of 1×1012?/? or higher and the colored layer comprises portions colored in a single hue, the colored portions having a color difference of 5.0 or less.Type: GrantFiled: February 6, 2014Date of Patent: February 27, 2018Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Tatsushi Fujimori, Shinji Naruse, Chihiro Kondo
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Patent number: 9812916Abstract: Provided is a motor bobbin around which a winding wire is wound, said motor bobbin comprising insulating paper and a resin molded body. The insulating paper and the resin molded body are coupled and fixed together without using an adhesive agent. Surfaces of the insulating paper which are in contact with the resin molded body are configured using aramid paper comprising an aramid fibrid and aramid short fibers. Resin is melt extruded and thermal-fusion bonded upon the aramid paper comprising the aramid fibrid and the aramid short fibers, and the surfaces configured from the aramid paper are surface treated to obtain the insulating paper. The motor bobbin is obtained by bringing melted portions of the resin molded body into contact with the top of the aramid paper.Type: GrantFiled: December 19, 2013Date of Patent: November 7, 2017Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Chihiro Kondo, Yasunori Tanaka
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Patent number: 9808972Abstract: In a method for manufacturing a motor bobbin around which a coil is wound, an insulating sheet and a core material are disposed within the cavity of an injection mold, and the motor bobbin is formed by the injection mold into which a resin is injected. The motor bobbin consists of the insulating sheet and a resin molded body.Type: GrantFiled: July 24, 2014Date of Patent: November 7, 2017Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Chihiro Kondo, Yasunori Tanaka
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Patent number: 9776348Abstract: In a method for manufacturing a motor bobbin around which a coil is wound, an insulating sheet and a core material are disposed within the cavity of an injection mold, and the motor bobbin is formed by the injection mold into which a resin is injected. The motor bobbin consists of the insulating sheet and a resin molded body.Type: GrantFiled: July 24, 2014Date of Patent: October 3, 2017Assignee: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Chihiro Kondo, Yasunori Tanaka
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Publication number: 20170119638Abstract: Provided is a new application for D-pantothenyl alcohol. It is a melanogenesis inhibitor comprising D-pantothenyl alcohol.Type: ApplicationFiled: April 2, 2015Publication date: May 4, 2017Inventors: Chihiro Kondo, Shoko Sassa, Yuko Saitoh, Yasuhito Mori, Kouji Yokoyama
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Patent number: 9414998Abstract: An external preparation for skin is provided for amelioration of pigmentation. The skin preparation includes a compound represented by the following general formula (1), an isomer thereof, and/or a pharmacologically acceptable salt thereof: wherein R1 represents an aromatic group; R2 represents a hydrogen atom, or a linear or branched chain alkyl or acyl group having 1 to 4 carbon atoms; and R3 represents a hydrogen atom or a linear chain or branched chain alkyl group having 1 to 4 carbon atoms.Type: GrantFiled: July 8, 2014Date of Patent: August 16, 2016Assignee: POLA CHEMICAL INDUSTRIES INC.Inventors: Yuko Saitoh, Chihiro Kondo, Takashi Yamasaki
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Publication number: 20160214291Abstract: In a method for manufacturing a motor bobbin around which a coil is wound, an insulating sheet and a core material are disposed within the cavity of an injection mold, and the motor bobbin is formed by the injection mold into which a resin is injected. The motor bobbin consists of the insulating sheet and a resin molded body.Type: ApplicationFiled: July 24, 2014Publication date: July 28, 2016Inventors: Shinji NARUSE, Tatsushi FUJIMORI, Chihiro KONDO, Yasunori TANAKA
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Publication number: 20150376837Abstract: Disclosed is colored aramid paper which comprises aramid paper comprising aramid fibrids and short aramid fibers and, formed on at least one surface thereof, a colored layer comprising a colorant and a binder, wherein the colored layer has a surface resistivity of 1×1012 ?/? or higher and the colored layer comprises portions colored in a single hue, the colored portions having a color difference of 5.0 or less.Type: ApplicationFiled: February 6, 2014Publication date: December 31, 2015Applicant: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Tatsushi FUJIMORI, Shinji NARUSE, Chihiro KONDO
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Publication number: 20150303756Abstract: A motor bobbin having a bobbin body portion around which a coil is to be wound, and flange portions provided integrally to both end portions of the bobbin body portion, the bobbin comprising: a molded resin article formed by using a polymer having amide linkages, and an insulating paper comprising an aramid paper made of an aramid fibrid and an aramid short fiber, wherein a surface of the molded resin article and the aramid paper are directly bonded to each other. The motor bobbin can cope with an increased efficiency and an increased power output of a motor generator or the like.Type: ApplicationFiled: March 6, 2013Publication date: October 22, 2015Applicant: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji NARUSE, Tatsushi FUJIMORI, Chihiro KONDO, Yasunori TANAKA
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Publication number: 20150288238Abstract: Provided is a motor bobbin around which a winding wire is wound, said motor bobbin comprising insulating paper and a resin moulded body. The insulating paper and the resin moulded body are coupled and fixed together without using an adhesive agent. Surfaces of the insulating paper which are in contact with the resin moulded body are configured using aramid paper comprising an aramid fibrid and aramid short fibres. Resin is melt extruded and thermal-fusion bonded upon the aramid paper comprising the aramid fibrid and the aramid short fibres, and the surfaces configured from the aramid paper are surface treated to obtain the insulating paper. The motor bobbin is obtained by bringing melted portions of the resin moulded body into contact with the top of the aramid paper.Type: ApplicationFiled: December 19, 2013Publication date: October 8, 2015Applicant: DUPONT TEIJIN ADVANCED PAPERS (JAPAN), LTD.Inventors: Shinji Naruse, Tatsushi Fujimori, Chihiro Kondo, Yasunori Tanaka
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Patent number: 9066914Abstract: An object of the present invention is to provide a prophylactic or ameliorating agent for pigmentation having a novel scaffold and an external preparation for skin containing the same as a component.Type: GrantFiled: January 12, 2011Date of Patent: June 30, 2015Assignee: POLA CHEMICAL INDUSTRIES INC.Inventors: Takashi Yamasaki, Yuko Saitoh, Chihiro Kondo
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Publication number: 20150111013Abstract: Provided is an a aramid-resin film laminate comprising an aramid paper comprising an aramid fibrid and an aramid short fiber, and a resin film laminated on each other. The aramid-resin film laminate is obtained by conducting a plasma treatment on a surface of the aramid paper, the surface having a skin layer portion whose heat of fusion measured with a differential scanning calorimeter (DSC) is 25 cal/g or less, and bonding the aramid paper and the resin film to each other by heating, pressing, or heating under pressure, with the plasma treated surface of the aramid paper and a plasma treated surface of the resin film facing each other. This laminate is an aramid-resin film laminate in which the aramid paper and the resin film are laminated on each other without using any adhesive agent and without impairing characteristics of both the aramid paper and the resin film, and is excellent in heat resistance, electrical characteristics, chemical resistance, mechanical characteristics, and the like.Type: ApplicationFiled: April 16, 2013Publication date: April 23, 2015Inventors: Tatsushi Fujimori, Shinji Naruse, Chihiro Kondo, Yoshihiko Kagetani, Hisashi Katsumata, Masashi Kato