Patents by Inventor Masatoshi Narita
Masatoshi Narita 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: 20190156978Abstract: An insulated electrical wire of an embodiment includes a conductor having a first and a second lateral face which are opposed to each other; and a first and a second insulating film which are arranged on the first and second lateral faces, respectively, and each of which has a pair of convex portions and an intermediate portion arranged between the pair of convex portions. A ratio of a thickness of the intermediate portion relative to a thickness of the pair of convex portions of each of the first and second insulating films is from 0.50 to 0.90.Type: ApplicationFiled: January 29, 2019Publication date: May 23, 2019Applicants: DENSO CORPORATION, UNIMAC LTD.Inventors: Akito TAMURA, Yuki AMANO, Kazuomi HIRAI, Masatoshi NARITA, Tatsumi HIRANO, Yasunari ASHIDA, Suguru IGARASHI
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Patent number: 9607736Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 80 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and 20 to 50 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.Type: GrantFiled: January 15, 2015Date of Patent: March 28, 2017Assignees: DENSO Corporation, Unimac LTD.Inventors: Yuki Amano, Shinsuke Sugiura, Kazuomi Hirai, Yumi Nakane, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
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Patent number: 9601238Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride, 5 to 20 mol % of 3,3?,4,4?-benzophenonetetracarboxylic dianhydride and 5 to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.Type: GrantFiled: January 15, 2015Date of Patent: March 21, 2017Assignees: DENSO Corporation, Unimac Ltd.Inventors: Yuki Amano, Shinsuke Sugiura, Kazuomi Hirai, Yumi Nakane, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
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Patent number: 9330814Abstract: According to one embodiment, an insulated electric wire is disclosed. The insulated electric wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver, a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate react with an acid component formed on the first layer, and a third layer of a polyimide formed on the second layer.Type: GrantFiled: July 16, 2013Date of Patent: May 3, 2016Assignees: Denso Corporation, Unimac Ltd.Inventors: Tomokazu Hisada, Yuki Amano, Kazuomi Hirai, Yumi Kawachi, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
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Publication number: 20150206626Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride, 5 to 20 mol % of 3,3?,4,4?-benzophenonetetracarboxylic dianhydride and 5 to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.Type: ApplicationFiled: January 15, 2015Publication date: July 23, 2015Applicants: UNIMAC LTD., DENSO CORPORATIONInventors: Yuki AMANO, Shinsuke SUGIURA, Kazuomi HIRAI, Yumi NAKANE, Masatoshi NARITA, Tatsumi HIRANO, Futoshi KANEMITSU, Yasunari ASHIDA
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Publication number: 20150206627Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 80 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and 20 to 50 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.Type: ApplicationFiled: January 15, 2015Publication date: July 23, 2015Applicants: UNIMAC LTD., DENSO CORPORATIONInventors: Yuki AMANO, Shinsuke SUGIURA, Kazuomi HIRAI, Yumi NAKANE, Masatoshi NARITA, Tatsumi HIRANO, Futoshi KANEMITSU, Yasunari ASHIDA
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Publication number: 20140020929Abstract: According to one embodiment, an insulated electric wire is disclosed. The insulated electric wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver, a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate react with an acid component formed on the first layer, and a third layer of a polyimide formed on the second layer.Type: ApplicationFiled: July 16, 2013Publication date: January 23, 2014Inventors: Tomokazu HISADA, Yuki Amano, Kazuomi Hirai, Yumi Kawachi, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida