Patents by Inventor Hiroaki Tsukamoto
Hiroaki Tsukamoto 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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Patent number: 11953526Abstract: A current sensor includes a wiring board, a shield, an insulating sensor housing, and a shield adhesive. The wiring board and the shield are accommodated in the sensor housing. The sensor housing has a shield support part to support the shield, and a shield adhesion part. An application surface of the shield adhesion part is further from the shield than a contact surface of the shield support part. The shield is mounted on the contact surface of the shield support part, and the shield adhesive is disposed between the application surface of the shield adhesion part and the shield. The shield and the wiring board are aligned with and spaced from each other in the sensor housing.Type: GrantFiled: June 27, 2022Date of Patent: April 9, 2024Assignee: DENSO CORPORATIONInventors: Akito Sasaki, Ryosuke Sakai, Hiroaki Miwa, Takeshi Tsukamoto, Hiroshi Nomura, Takuma Esaka, Tatsuaki Sugito
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Publication number: 20230303816Abstract: Provided are a mixed water-based dispersion of polyimide-fluororesin-polar crystal particulates with excellent handleability (e.g., safety, environmental burden, equipment cost) as well as excellent adhesion performance and heat resistance performance without the use of an organic solvent; a method of producing the same; and a new method of coating. A mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates according to the present invention comprises a polyimide, fluororesin, polar crystal particulates, and water.Type: ApplicationFiled: March 28, 2023Publication date: September 28, 2023Applicant: JAPAN MATEX CO., LTD.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 11603439Abstract: A prepreg according to the invention comprises: a raw yarn treated by a sizing agent; a thermoplastic resin material; and a thermosetting resin material; wherein the thermoplastic resin material coats at least a part of an outer peripheral surface of the raw yarn, wherein the thermosetting resin material coats at least a part of an outer peripheral surface of the thermoplastic resin material, or wherein the thermosetting resin material coats at least a part of the outer peripheral surface of the raw yarn, wherein the thermoplastic resin material coats at least a part of an outer peripheral surface of the thermosetting resin material, and wherein the thermosetting resin material is polymerized by heating.Type: GrantFiled: February 20, 2020Date of Patent: March 14, 2023Assignee: JAPAN MATEX CO., LTD.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 11555260Abstract: An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.Type: GrantFiled: June 8, 2021Date of Patent: January 17, 2023Assignee: Japan Matex Co. Ltd.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20220403559Abstract: The purpose of the instant invention is to provide a superfine carbon fiber thread with excellent bending strength and repeated bending. To achieve this purpose, (1) a desired composite thread is produced by opening open carbon fibers, slitting the opened fibers, twisting the slit fibers and forming a composite with a composite thread; and (2) a composite thread is produced by performing a lamination process with a film (film of composite materials) while performing a fiber-opening process, and then slitting, twisting and heating the tread for stress relief.Type: ApplicationFiled: June 1, 2022Publication date: December 22, 2022Applicant: JAPAN MATEX CO., LTD.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 11309586Abstract: A discharge circuit includes a plurality of burden circuits that are electrically connected in parallel to a plurality of power storage units, respectively. Each of the plurality of burden circuits includes (i) a resistor and a switch that are electrically connected in series between both ends of a corresponding one of the plurality of power storage units, and (ii) a control terminal that controls the switch according to a potential of the control terminal. The plurality of burden circuits are electrically connected in series between a positive electrode and a negative electrode. The control terminal of a n+1-th burden circuit from a reference point is electrically connected, via the switch of the n-th burden circuit from the reference point, to a reference point side terminal of a n-th power storage unit from the reference point. The reference point is the positive electrode or the negative electrode.Type: GrantFiled: September 3, 2020Date of Patent: April 19, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroaki Tsukamoto, Yohsuke Mitani, Takahiro Kudo, Yoshimitsu Odajima
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Patent number: 11251636Abstract: A power storage device includes an input terminal, an output terminal, a first circuit, and a second circuit. The input terminal is to be electrically connected to a power supply. The output terminal is to be electrically connected to a load. The first circuit and the second circuit are electrically connected in parallel. Each of the first circuit and the second circuit are disposed between the input terminal and the output terminal. The first circuit includes a power storage unit and a discharge path that allows a discharge current from the power storage unit to flow toward the output terminal. The second circuit includes a blocking path that prevents the discharge current from flowing toward the input terminal.Type: GrantFiled: July 2, 2020Date of Patent: February 15, 2022Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Hiroaki Tsukamoto, Yohsuke Mitani, Takahiro Kudo, Yoshimitsu Odajima
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Publication number: 20210324192Abstract: Provided are a mixed water-based dispersion of polyimide-fluororesin-polar crystal particulates with excellent handleability (e.g. safety, environmental burden, equipment cost) as well as excellent adhesion performance and heat resistance performance without the use of an organic solvent, and a method of producing the same, and a new method of coating. A mixed aqueous dispersion of polyimide-fluororesin-polar crystal particulates according to the present invention comprises a polyimide, fluororesin, polar crystal particulates, and water.Type: ApplicationFiled: December 22, 2020Publication date: October 21, 2021Applicant: JAPAN MATEX CO., LTD.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20210301427Abstract: The present invention relates to twisted yarn obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape in which adhesive, alumina sol, and potassium persulfate permeate between a plurality of the carbon fibers spread flatly. An open yarn is obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn.Type: ApplicationFiled: June 10, 2021Publication date: September 30, 2021Applicant: JAPAN MATEX CO., LTDInventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 11131041Abstract: An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.Type: GrantFiled: December 7, 2018Date of Patent: September 28, 2021Assignee: Japan Matex Co. Ltd.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20210292935Abstract: An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.Type: ApplicationFiled: June 8, 2021Publication date: September 23, 2021Applicant: Japan Matex Co. Ltd.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 11060211Abstract: The present invention relates to twisted yarn obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape in which adhesive, alumina sol, and potassium persulfate permeate between a plurality of the carbon fibers spread flatly. An open yarn is obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn. A carbon fiber covered twisted yarn is obtained by winding the twisted yarn around the periphery of a core material.Type: GrantFiled: July 8, 2020Date of Patent: July 13, 2021Assignee: JAPAN MATEX CO., LTDInventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20200403277Abstract: A discharge circuit includes a plurality of burden circuits that are electrically connected in parallel to a plurality of power storage units, respectively. Each of the plurality of burden circuits includes (i) a resistor and a switch that are electrically connected in series between both ends of a corresponding one of the plurality of power storage units, and (ii) a control terminal that controls the switch according to a potential of the control terminal. The plurality of burden circuits are electrically connected in series between a positive electrode and a negative electrode. The control terminal of a n+1-th burden circuit from a reference point is electrically connected, via the switch of the n-th burden circuit from the reference point, to a reference point side terminal of a n-th power storage unit from the reference point. The reference point is the positive electrode or the negative electrode.Type: ApplicationFiled: September 3, 2020Publication date: December 24, 2020Inventors: HIROAKI TSUKAMOTO, YOHSUKE MITANI, TAKAHIRO KUDO, YOSHIMITSU ODAJIMA
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Patent number: 10844523Abstract: The present invention relates to twisted yarn (P) obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape (F2), open yarn obtained by S-twisting and Z-twisting covering yarn (C) around the periphery of the twisted yarn (P), carbon fiber covered twisted yarn obtained by winding the twisted yarn around the periphery of a core material, and methods for manufacturing thereof.Type: GrantFiled: May 31, 2017Date of Patent: November 24, 2020Assignee: JAPAN MATEX CO., LTDInventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20200347526Abstract: The present invention relates to twisted yarn obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape in which adhesive, alumina sol, and potassium persulfate permeate between a plurality of the carbon fibers spread flatly. An open yarn is obtained by S-twisting and Z-twisting covering yarn around the periphery of the twisted yarn. A carbon fiber covered twisted yarn is obtained by winding the twisted yarn around the periphery of a core material.Type: ApplicationFiled: July 8, 2020Publication date: November 5, 2020Applicant: JAPAN MATEX CO., LTDInventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20200335991Abstract: A power storage device includes an input terminal, an output terminal, a first circuit, and a second circuit. The input terminal is to be electrically connected to a power supply. The output terminal is to be electrically connected to a load. The first circuit and the second circuit are electrically connected in parallel. Each of the first circuit and the second circuit are disposed between the input terminal and the output terminal. The first circuit includes a power storage unit and a discharge path that allows a discharge current from the power storage unit to flow toward the output terminal. The second circuit includes a blocking path that prevents the discharge current from flowing toward the input terminal.Type: ApplicationFiled: July 2, 2020Publication date: October 22, 2020Inventors: HIROAKI TSUKAMOTO, YOHSUKE MITANI, TAKAHIRO KUDO, YOSHIMITSU ODAJIMA
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Publication number: 20200270412Abstract: A prepreg according to the invention comprises: a raw yarn treated by a sizing agent; a thermoplastic resin material; and a thermosetting resin material; wherein the thermoplastic resin material coats at least a part of an outer peripheral surface of the raw yarn, wherein the thermosetting resin material coats at least a part of an outer peripheral surface of the thermoplastic resin material, or wherein the thermosetting resin material coats at least a part of the outer peripheral surface of the raw yarn, wherein the thermoplastic resin material coats at least a part of an outer peripheral surface of the thermosetting resin material, and wherein the thermosetting resin material is polymerized by heating.Type: ApplicationFiled: February 20, 2020Publication date: August 27, 2020Applicant: JAPAN MATEX CO., LTD.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Patent number: 10682668Abstract: The present invention provides a method of manufacturing a high-strength carbon fiber resin tape and the high-strength carbon fiber resin tape that can be widely applied for reinforcement of PVC pipe, PP pipe, or the like. The high-strength carbon fiber resin tape according to the present invention comprises a base material including a binder, metal oxide sol, and potassium persulfate between acrylic carbon fibers; an adhesive material having one or more physical characteristics of heat resistance, cold resistance, or high-strength applied on one surface of the base material; and an ultraviolet protection coating applied on the other surface of the base material.Type: GrantFiled: August 21, 2017Date of Patent: June 16, 2020Assignee: Japan Matex Co., Ltd.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20190233984Abstract: An apparatus for manufacturing open carbon fiber superfine yarn comprises a yarn feeding part for feeding a carbon fiber bundle; a tank for storing water for opening carbon fiber to immerse the carbon fiber bundle in the water for opening carbon fiber; a first drying part for drying the open carbon fiber bundle formed by the immersion in the water for opening carbon fiber; an application part for applying a catalyst to the dried open carbon fiber bundle; a second drying part for drying the catalyst-applied open carbon fiber bundle to obtain open carbon fiber resin tape; a slitting part for slitting the open carbon fiber resin tape longitudinally; and a twisting part for twisting a plurality of the open carbon fiber resin tapes slit by the slitting part to form open carbon fiber superfine yarn.Type: ApplicationFiled: December 7, 2018Publication date: August 1, 2019Applicant: Japan Matex Co. Ltd.Inventors: Katsuro Tsukamoto, Hiroaki Tsukamoto
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Publication number: 20190169770Abstract: The present invention relates to twisted yarn (P) obtained by twisting a plurality of carbon fiber resins which are slit from a carbon fiber resin tape (F2), open yarn obtained by S-twisting and Z-twisting covering yarn (C) around the periphery of the twisted yarn (P), carbon fiber covered twisted yarn obtained by winding the twisted yarn around the periphery of a core material, and methods for manufacturing thereof.Type: ApplicationFiled: May 31, 2017Publication date: June 6, 2019Applicant: JAPAN MATEX CO., LTDInventors: Katsuro Tsukamoto, Hiroaki Tsukamoto