Patents by Inventor Yuta Kuroki
Yuta Kuroki 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: 20230416477Abstract: A fluorine resin film to be provided includes a fluorine resin, wherein the fluorine resin film has an average value of 1200% or more of a tensile elongation at break in a first direction and a tensile elongation at break in a second direction under a 180° C. atmosphere, the first direction and the second direction being in-plane directions and orthogonal to each other. This fluorine resin film can be used as a coating film for coating the surface of a rubber-containing substrate included in a molded rubber body and is suitable for manufacturing a molded rubber body having a surface coated with the film.Type: ApplicationFiled: August 5, 2021Publication date: December 28, 2023Applicant: NITTO DENKO CORPORATIONInventors: Yuta KUROKI, Narumi UEDA, Kurato AKIBA, Keiko FUJIWARA
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Patent number: 11834761Abstract: An adhesive tape substrate production method disclosed in the present description includes the steps of decreasing the amount of a sizing agent contained in a glass cloth by heat; impregnating the glass cloth for which the amount of the sizing agent has been decreased with a dispersion of a fluorine resin; and heating the impregnated glass cloth to a temperature equal to or higher than a melting point of the fluorine resin. Thus, an adhesive tape substrate including the glass cloth impregnated with the fluorine resin is obtained. This method are more productive of adhesive tape substrates and adhesive tapes than conventional methods. In addition, adhesive tape substrates and adhesive tapes for which the occurrence of defects in appearance are reduced can be produced.Type: GrantFiled: August 26, 2019Date of Patent: December 5, 2023Assignee: NITTO DENKO CORPORATIONInventors: Yoshinori Watanabe, Hiroki Kigami, Yuta Kuroki
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Publication number: 20230312851Abstract: A fluorine resin film to be provided includes a fluorine resin, and has a surface subjected to a modification treatment. In a C1s narrow spectrum at the surface evaluated by electron spectroscopy for chemical analysis, an intensity of a peak at a 284 eV chemical shift is 0.80 or less when an intensity of a maximum peak is set to 1. This fluorine resin film is a fluorine resin film having a surface subjected to a modification treatment, and is suitable for manufacturing a molded rubber body having a surface coated with the film.Type: ApplicationFiled: August 5, 2021Publication date: October 5, 2023Applicant: NITTO DENKO CORPORATIONInventors: Narumi UEDA, Yuta KUROKI, Kurato AKIBA, Keiko FUJIWARA
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Publication number: 20230279191Abstract: A fluorine resin film to be provided includes a fluorine resin, and has a surface subjected to a modification treatment. The fluorine resin film has, at the surface, the following proportion of each of carbon, oxygen, and fluorine elements based on 100 atom % of a sum of the elements: 30 atom % or more and 70 atom % or less of carbon; 0.6 atom % or more and less than 13 atom % of oxygen; and 60 atom % or less of fluorine. This fluorine resin film is a fluorine resin film having a surface subjected to a modification treatment, and is suitable for manufacturing a molded rubber body having a surface coated with the film.Type: ApplicationFiled: August 5, 2021Publication date: September 7, 2023Applicant: NITTO DENKO CORPORATIONInventors: Yuta KUROKI, Narumi UEDA, Kurato AKIBA, Keiko FUJIWARA
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Patent number: 11123967Abstract: A heat resistant release sheet of the present disclosure includes a polyimide substrate, and a first polytetrafluoroethylene (PTFE) layer and a second PTFE layer that sandwich the polyimide substrate therebetween. PTFE composing the first PTFE layer and PTFE composing the second PTFE layer each have a number-average molecular weight of 6 million or more, and a peel force required to peel the first PTFE layer from the polyimide substrate is 0.5 N/20 mm or more, and a peel force required to peel the second PTFE layer from the polyimide substrate is less than 0.5 N/20 mm. The heat resistant release sheet of the present disclosure has a new structure and can also be used for thermocompression bonding at a higher temperature.Type: GrantFiled: March 27, 2018Date of Patent: September 21, 2021Assignee: NITTO DENKO CORPORATIONInventors: Kurato Akiba, Yuta Kuroki
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Patent number: 10617986Abstract: The present invention provides an air-permeable filter capable of maintaining excellent air permeation performance without being clogged even in an environment involving exposure to an oil, oil mist, or ink. The present invention relates to an air-permeable filter including a porous membrane having a surface coated with an oil-repellent agent, the filter being characterized in that a sliding angle of 20 ?l of hexadecane or pentadecane on the surface of the filter is 60° or less.Type: GrantFiled: July 25, 2016Date of Patent: April 14, 2020Assignee: NITTO DENKO CORPORATIONInventors: Keiko Fujiwara, Yuta Kuroki, Hajime Yamamoto, Asuka Onohara
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Publication number: 20200101703Abstract: A heat resistant release sheet of the present disclosure includes a polyimide substrate, and a first polytetrafluoroethylene (PTFE) layer and a second PTFE layer that sandwich the polyimide substrate therebetween. PTFE composing the first PTFE layer and PTFE composing the second PTFE layer each have a number-average molecular weight of 6 million or more, and a peel force required to peel the first PTFE layer from the polyimide substrate is 0.5 N/20 mm or more, and a peel force required to peel the second PTFE layer from the polyimide substrate is less than 0.5 N/20 mm. The heat resistant release sheet of the present disclosure has a new structure and can also be used for thermocompression bonding at a higher temperature.Type: ApplicationFiled: March 27, 2018Publication date: April 2, 2020Applicant: NITTO DENKO CORPORATIONInventors: Kurato AKIBA, Yuta KUROKI
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Publication number: 20190375963Abstract: An adhesive tape substrate production method disclosed in the present description includes the steps of decreasing the amount of a sizing agent contained in a glass cloth by heat; impregnating the glass cloth for which the amount of the sizing agent has been decreased with a dispersion of a fluorine resin; and heating the impregnated glass cloth to a temperature equal to or higher than a melting point of the fluorine resin. Thus, an adhesive tape substrate including the glass cloth impregnated with the fluorine resin is obtained. This method are more productive of adhesive tape substrates and adhesive tapes than conventional methods. In addition, adhesive tape substrates and adhesive tapes for which the occurrence of defects in appearance are reduced can be produced.Type: ApplicationFiled: August 26, 2019Publication date: December 12, 2019Inventors: Yoshinori WATANABE, Hiroki KIGAMI, Yuta KUROKI
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Patent number: 10435591Abstract: An adhesive tape substrate production method disclosed in the present description includes the steps of: decreasing the amount of a sizing agent contained in a glass cloth by heat; impregnating the glass cloth for which the amount of the sizing agent has been decreased with a dispersion of a fluorine resin; and heating the impregnated glass cloth to a temperature equal to or higher than a melting point of the fluorine resin. Thus, an adhesive tape substrate including the glass cloth impregnated with the fluorine resin is obtained. This method are more productive of adhesive tape substrates and adhesive tapes than conventional methods. In addition, adhesive tape substrates and adhesive tapes for which the occurrence of defects in appearance are reduced can be produced.Type: GrantFiled: April 24, 2013Date of Patent: October 8, 2019Assignee: NITTO DENKO CORPORATIONInventors: Yoshinori Watanabe, Hiroki Kigami, Yuta Kuroki
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Patent number: 10224551Abstract: The present invention provides a sheet for thin layer transfer (10) including: a substrate (1) including a thin metal film or a thin heat-resistant resin film; and a fluorine resin layer (2) provided on at least one side of the substrate (1). The sheet for thin layer transfer thus provided can have reduced surface irregularities and be less prone to deteriorate even when subjected to repeated thermal transfer by thermocompression bonding.Type: GrantFiled: July 18, 2014Date of Patent: March 5, 2019Assignee: NITTO DENKO CORPORATIONInventor: Yuta Kuroki
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Publication number: 20180193787Abstract: The present invention provides an air-permeable filter capable of maintaining excellent air permeation performance without being clogged even in an environment involving exposure to an oil, oil mist, or ink. The present invention relates to an air-permeable filter including a porous membrane having a surface coated with an oil-repellent agent, the filter being characterized in that a sliding angle of 20 ?l of hexadecane or pentadecane on the surface of the filter is 60° or less.Type: ApplicationFiled: July 25, 2016Publication date: July 12, 2018Applicant: NITTO DENKO CORPORATIONInventors: Keiko FUJIWARA, Yuta KUROKI, Hajime YAMAMOTO, Asuka ONOHARA
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Publication number: 20160276676Abstract: The present invention provides a sheet for thin layer transfer (10) including: a substrate (1) including a thin metal film or a thin heat-resistant resin film; and a fluorine resin layer (2) provided on at least one side of the substrate (1). The sheet for thin layer transfer thus provided can have reduced surface irregularities and be less prone to deteriorate even when subjected to repeated thermal transfer by thermocompression bonding.Type: ApplicationFiled: July 18, 2014Publication date: September 22, 2016Applicant: NITTO DENKO CORPORATIONInventor: Yuta KUROKI
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Publication number: 20150072580Abstract: An adhesive tape substrate production method disclosed in the present description includes the steps of: decreasing the amount of a sizing agent contained in a glass cloth by heat; impregnating the glass cloth for which the amount of the sizing agent has been decreased with a dispersion of a fluorine resin; and heating the impregnated glass cloth to a temperature equal to or higher than a melting point of the fluorine resin. Thus, an adhesive tape substrate including the glass cloth impregnated with the fluorine resin is obtained. This method are more productive of adhesive tape substrates and adhesive tapes than conventional methods. In addition, adhesive tape substrates and adhesive tapes for which the occurrence of defects in appearance are reduced can be produced.Type: ApplicationFiled: April 24, 2013Publication date: March 12, 2015Inventors: Yoshinori Watanabe, Hiroki Kigami, Yuta Kuroki
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Patent number: 8217643Abstract: A current detector includes a plate conductor (4) that is folded in one portion in a longitudinal direction to have two parts parallel to and facing each other having a predetermined width (w1) therebetween, so as to compose a looped current path (2a) in the conductor, and a magneto-electric transducer (2) that is placed between the two parts of the conductor (4; 4a, 4b) so that a magnetic sensing axis is parallel to a width direction of the conductor (4), of which a length (a) in a direction of the magnetic sensing axis is smaller than the width (w1) of the conductor.Type: GrantFiled: February 26, 2009Date of Patent: July 10, 2012Assignee: Toshiba Toko Meter Systems Co., Ltd.Inventors: Yuta Kuroki, Fuyuki Kurokawa, Mitsuhiro Sakoyama
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Publication number: 20110012590Abstract: A current detector includes a plate conductor (4) that is folded in one portion in a longitudinal direction to have two parts parallel to and facing each other having a predetermined width (w1) therebetween, so as to compose a looped current path (2a) in the conductor, and a magneto-electric transducer (2) that is placed between the two parts of the conductor (4; 4a, 4b) so that a magnetic sensing axis is parallel to a width direction of the conductor (4), of which a length (a) in a direction of the magnetic sensing axis is smaller than the width (w1) of the conductor.Type: ApplicationFiled: February 26, 2009Publication date: January 20, 2011Applicant: TOSHIBA TOKO METER SYSTEMS CO., LTD.Inventors: Yuta Kuroki, Fuyuki Kurokawa, Mitsuhiro Sakoyama