Patents by Inventor Naoya Yabuuchi
Naoya Yabuuchi 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: 20240146210Abstract: A power conversion device includes a power conversion circuit including semiconductor switching elements, a power supply wiring electrically connected to the power conversion circuit, a capacitor element, and a first capacitor connection wiring electrically connected between the power supply wiring and one electrode of the capacitor element and including a first opposed wiring portion having one end electrically connected to the power supply wiring and a second opposed wiring portion having another end electrically connected to one electrode of the capacitor element and disposed facing the first opposed wiring portion.Type: ApplicationFiled: September 27, 2023Publication date: May 2, 2024Applicant: Mitsubishi Electric CorporationInventor: Naoya YABUUCHI
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Patent number: 11923775Abstract: Provided is an in-vehicle power conversion device in which a smoothing capacitor includes a first electrical connection portion, a second electrical connection portion, a mechanical connection portion, and a smoothing capacitor main body. The first electrical connection portion is electrically connected to a first conductor. The second electrical connection portion is electrically connected to a second conductor. The mechanical connection portion functions as an additional electrical connection portion configured to fix the smoothing capacitor main body to the first conductor or the second conductor to be electrically connected to a fixing destination of the smoothing capacitor main body.Type: GrantFiled: December 28, 2018Date of Patent: March 5, 2024Assignee: Mitsubishi Electric CorporationInventors: Yuji Sugaya, Kosuke Inoue, Naoya Yabuuchi
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Patent number: 11431259Abstract: A power conversion device includes a transformer circuit formed of a center-tapped isolation transformer, a rectifying circuit formed of a semiconductor switch element connected to the transformer circuit, a smoothing circuit formed of a capacitor connected to the rectifying circuit, a positive terminal and a negative terminal connected to a load, and a grounding surface to which the negative terminal is connected, wherein a current path along which only an AC current flows is shortened by a negative terminal of the isolation transformer and a negative terminal of the capacitor being connected before being connected to the grounding surface, or the negative terminal connected to the load and the negative terminal of the capacitor being connected before being connected to the grounding surface.Type: GrantFiled: October 26, 2016Date of Patent: August 30, 2022Assignee: Mitsubishi Electric CorporationInventor: Naoya Yabuuchi
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Patent number: 11374504Abstract: An electric power converter is configured to perform conversion of power supplied from a power source. The electric power converter includes: a plurality of first capacitors connected in series between two lines to be used for supply of the power; and at least one second capacitor connected between a ground and a connection point between two first capacitors among the plurality of first capacitors.Type: GrantFiled: October 24, 2018Date of Patent: June 28, 2022Assignee: Mitsubishi Electric CorporationInventor: Naoya Yabuuchi
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Publication number: 20210384834Abstract: Provided is an in-vehicle power conversion device in which a smoothing capacitor includes a first electrical connection portion, a second electrical connection portion, a mechanical connection portion, and a smoothing capacitor main body. The first electrical connection portion is electrically connected to a first conductor. The second electrical connection portion is electrically connected to a second conductor. The mechanical connection portion functions as an additional electrical connection portion configured to fix the smoothing capacitor main body to the first conductor or the second conductor so as to be electrically connected to a fixing destination of the smoothing capacitor main body.Type: ApplicationFiled: December 28, 2018Publication date: December 9, 2021Applicant: Mitsubishi Electric CorporationInventors: Yuji SUGAYA, Kosuke INOUE, Naoya YABUUCHI
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Publication number: 20210367533Abstract: An electric power converter is configured to perform conversion of power supplied from a power source. The electric power converter includes: a plurality of first capacitors connected in series between two lines to be used for supply of the power; and at least one second capacitor connected between a ground and a connection point between two first capacitors among the plurality of first capacitors.Type: ApplicationFiled: October 24, 2018Publication date: November 25, 2021Applicant: Mitsubishi Electric CorporationInventor: Naoya YABUUCHI
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Patent number: 11128226Abstract: Provided is a power conversion device including: an isolation transformer (107) including a first winding and a second winding; switching elements (101 to 104) to be connected to the first winding of the isolation transformer (107); a first conductor (105) configured to connect one end of the first winding of the isolation transformer (107) to the switching elements (101 and 102); and a second conductor (106) configured to connect another end of the first winding of the isolation transformer (107) to the switching elements (103 and 104), the first conductor (105) and the second conductor (106) being arranged on an insulating substrate (301) so as to be parallel to each other so that the first conductor (105) and the second conductor (106) are prevented from overlapping each other.Type: GrantFiled: October 18, 2017Date of Patent: September 21, 2021Assignee: Mitsubishi Electric CorporationInventor: Naoya Yabuuchi
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Publication number: 20210281188Abstract: A power conversion device includes a transformer circuit formed of a center-tapped isolation transformer, a rectifying circuit formed of a semiconductor switch element connected to the transformer circuit, a smoothing circuit formed of a capacitor connected to the rectifying circuit, a positive terminal and a negative terminal connected to a load, and a grounding surface to which the negative terminal is connected, wherein a current path along which only an AC current flows is shortened by a negative terminal of the isolation transformer and a negative terminal of the capacitor being connected before being connected to the grounding surface, or the negative terminal connected to the load and the negative terminal of the capacitor being connected before being connected to the grounding surface.Type: ApplicationFiled: October 26, 2016Publication date: September 9, 2021Applicant: Mitsubishi Electric CorporationInventor: Naoya YABUUCHI
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Publication number: 20210175816Abstract: Provided is a power conversion device including: an isolation transformer (107) including a first winding and a second winding; switching elements (101 to 104) to be connected to the first winding of the isolation transformer (107); a first conductor (105) configured to connect one end of the first winding of the isolation transformer (107) to the switching elements (101 and 102); and a second conductor (106) configured to connect another end of the first winding of the isolation transformer (107) to the switching elements (103 and 104), the first conductor (105) and the second conductor (106) being arranged on an insulating substrate (301) so as to be parallel to each other so that the first conductor (105) and the second conductor (106) are prevented from overlapping each other.Type: ApplicationFiled: October 18, 2017Publication date: June 10, 2021Applicant: Mitsubishi Electric CorporationInventor: Naoya YABUUCHI
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Patent number: 9834702Abstract: The present disclosure provides a jet-black multilayer coating film having excellent properties in high appearance, water resistance, and humidity resistance and comprising a base coating film and a clear coating film formed by a coating composition containing a plant-derived aliphatic polyester mainly and a method for forming the same. A jet-black multilayer coating film comprising a base coating film layer formed by a base coating composition which contains a polyester polyol (A-1) containing a polyol having three or more functions and lactic acid as a consisting component of 80 mol % or more and having a hydroxyl value of 140 to 240 mgKOH/g wherein 70 mol % or more of the hydroxyl groups are secondary hydroxyl groups, an acrylic resin (A-2) with a hydroxyl value of 30 to 80 mgKOH/g and a glass transition point of 40 to 80° C.Type: GrantFiled: March 14, 2013Date of Patent: December 5, 2017Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Morita, Yasunori Miwa, Hirofumi Yamashita, Naoya Yabuuchi, Masahiko Ishii, Masako Hase
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Patent number: 9745491Abstract: The object of the present disclosure is to provide a method for producing a crosslinked polymer by radical polymerization of a monomer composition, by which method a desired crosslinked polymer can be produced in a high solid content with good productivity (also at a low production cost), and a crosslinked polymer obtained by the production method and a coating composition containing the same.Type: GrantFiled: December 27, 2013Date of Patent: August 29, 2017Assignee: NIPPON BEE CHEMICAL CO., LTD.Inventors: Yumiko Hayashi, Sachiko Morimoto, Manabu Yamaoka, Naoya Yabuuchi
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Patent number: 9148115Abstract: A filter includes: a filter circuit connected between a first terminal and a second terminal; and a matching circuit connected between the filter circuit and the second terminal, wherein an impedance viewed from the second terminal toward the matching circuit is less than an impedance viewed from a node between the filter circuit and the matching circuit toward the filter circuit.Type: GrantFiled: June 4, 2013Date of Patent: September 29, 2015Assignee: TAIYO YUDEN CO., LTD.Inventors: Naoya Yabuuchi, Toshio Nishizawa, Hikaru Shimomura
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Publication number: 20150104653Abstract: The present disclosure provides a jet-black multilayer coating film having excellent properties in high appearance, water resistance, and humidity resistance and comprising a base coating film and a clear coating film formed by a coating composition containing a plant-derived aliphatic polyester mainly and a method for forming the same. A jet-black multilayer coating film comprising a base coating film layer formed by a base coating composition which contains a polyester polyol (A-1) containing a polyol having three or more functions and lactic acid as a consisting component of 80 mol % or more and having a hydroxyl value of 140 to 240 mgKOH/g wherein 70 mol % or more of the hydroxyl groups are secondary hydroxyl groups, an acrylic resin (A-2) with a hydroxyl value of 30 to 80 mgKOH/g and a glass transition point of 40 to 80° C.Type: ApplicationFiled: March 14, 2013Publication date: April 16, 2015Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Koji Morita, Yasunori Miwa, Hirofumi Yamashita, Naoya Yabuuchi, Masahiko Ishii, Masako Hase
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Publication number: 20140187710Abstract: The object of the present disclosure is to provide a method for producing a crosslinked polymer by radical polymerization of a monomer composition, by which method a desired crosslinked polymer can be produced in a high solid content with good productivity (also at a low production cost), and a crosslinked polymer obtained by the production method and a coating composition containing the same.Type: ApplicationFiled: December 27, 2013Publication date: July 3, 2014Inventors: Yumiko HAYASHI, Sachiko MORIMOTO, Manabu YAMAOKA, Naoya YABUUCHI
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Publication number: 20130328639Abstract: A filter includes: a filter circuit connected between a first terminal and a second terminal; and a matching circuit connected between the filter circuit and the second terminal, wherein an impedance viewed from the second terminal toward the matching circuit is less than an impedance viewed from a node between the filter circuit and the matching circuit toward the filter circuit.Type: ApplicationFiled: June 4, 2013Publication date: December 12, 2013Inventors: Naoya YABUUCHI, Toshio NISHIZAWA, Hikaru SHIMOMURA
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Publication number: 20130317165Abstract: The object of the present disclosure is to provide a crosslinked resin fine particle which has a particle diameter small enough to be used suitably for the purpose of viscosity control and can be produced inexpensively. Crosslinked resin fine particles obtained by reacting a vinyl monomer composition comprising: 5 to 50% by weight of a (meth)acrylamide-based monomer (A), 5 to 50% by weight of a crosslinkable unsaturated monomer (B), and 10 to 90% by weight of a (meth)acrylate having an alkyl group containing 8 to 24 carbon atoms (C) in an organic solvent, and having a number average particle diameter of 10 to 250 nm.Type: ApplicationFiled: May 16, 2013Publication date: November 28, 2013Inventors: Sachiko MORIMOTO, Hirofumi YAMASHITA, Naoya YABUUCHI
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Publication number: 20110257273Abstract: A low-molecular-weight polyester resin which can elasticize a resin suitably and can be used for various purposes, various resins obtained by using the resin, and the purposes thereof. The polyester resin is obtained by polymerizing a monomer composition containing 10 to 90 weight % of a linear dicarboxylic acid and/or diol having at least 8 carbon atoms (I), 5 to 80 weight % of a branched dicarboxylic acid and/or diol having at least 4 carbon atoms (II-1) and/or 2 to 40 weight % of at least one polyfunctional monomer (II-2) selected from the group consisting of polyols, polycarboxylic acids and hydroxycarboxylic acids having 3 or more functional groups respectively and which has the number average molecular weight of 500 to 5000 and is amorphous.Type: ApplicationFiled: April 11, 2011Publication date: October 20, 2011Applicant: NIPPON BEE CHEMICAL CO., LTD.Inventors: Naoya YABUUCHI, Hirofumi YAMASHITA, Koji MORITA, Yasunori MIWA
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Publication number: 20110009518Abstract: There are provided a photosetting type bio-based coating composition and its coated article, wherein the coating composition has a sufficient hydrolysis resistance and a sufficient crosslinking density so as to be excellent in such as long-term stability, and is inexpensive, and is applicable also to an aqueous solvent. The photosetting type bio-based coating composition according to the present invention is characterized by comprising: a bio-based photopolymerizable compound as a film-forming ingredient which compound has at least one lactic acid unit and at least one photopolymerizable group together in a molecule; and a photopolymerization initiator. The coated article according to the present invention is characterized by being obtained by being coated with the aforementioned coating composition.Type: ApplicationFiled: May 26, 2010Publication date: January 13, 2011Applicants: NIPPON BEE CHEMICAL CO., LTD., National University Corporation Kyoto Institute of Technology, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Naoya Yabuuchi, Koji Morita, Hirofumi Yamashita, Hitomi Ohara, Shiro Kobayashi, Masahiko Ishii
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Patent number: 7700676Abstract: It is an object of the present invention to provide a water-based one-pack-type coating composition which can form a coating film having a satisfactory feel of achieving a soft feel and coating film performance simultaneously and further maintains common performance of paint such as excellent design (a matt appearance, etc.), an adhesion property, coating film strength, abrasion resistance, water resistance, oil and grease-contamination resistance. A water-based one-pack-type coating composition of the present invention comprises: an ionomer resin emulsion (A), a polyolefin resin emulsion (B), resin particles (C), and a urethane dispersion (D), wherein a solid content mass ratio (mass ratio as converted into a solid content) of (C)/{(A)+(B)+(D)} is 40/100 to 100/100, a solid content mass ratio of (A)/(B) is 1/3 to 3/1, and a solid content mass ratio of {(A)+(B)}/(D) is 40/60 to 70/30.Type: GrantFiled: December 19, 2006Date of Patent: April 20, 2010Assignee: Toyota Jidosha Kabushiki KaishaInventors: Kenji Kawazu, Kentaro Komabayashi, Naoya Yabuuchi, Shinnosuke Kawano, Hirofumi Yamashita
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Publication number: 20090048378Abstract: It is an object of the present invention to provide a water-based one-pack-type coating composition which can form a coating film having a satisfactory feel of achieving a soft feel and coating film performance simultaneously and further maintains common performance of paint such as excellent design (a matt appearance, etc.), an adhesion property, coating film strength, abrasion resistance, water resistance, oil and grease-contamination resistance. A water-based one-pack-type coating composition of the present invention comprises: an ionomer resin emulsion (A), a polyolefin resin emulsion (B), resin particles (C), and a urethane dispersion (D), wherein a solid content mass ratio (mass ratio as converted into a solid content) of (C)/{(A)+(B)+(D)} is 40/100 to 100/100, a solid content mass ratio of (A)/(B) is 1/3 to 3/1, and a solid content mass ratio of {(A)+(B)}/(D) is 40/60 to 70/30.Type: ApplicationFiled: December 19, 2006Publication date: February 19, 2009Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Kenji Kawazu, Kentaro Komabayashi, Naoya Yabuuchi, Shinnosuke Kawano, Hirofumi Yamashita