Patents by Inventor Takashi Inagaki
Takashi Inagaki 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: 11972915Abstract: A breaking device includes an interrupting section including interrupting units in which main interrupters, impedance circuits, and unit arresters are connected in parallel to each other, the main interrupters being connected in series, a resonant circuit section including a reactor, a capacitor, and a closing switch and connected in parallel to the interrupting section, and an all-point arrester connected in parallel to the interrupting section via the reactor. The clamping voltages of the unit arresters are equal among the interrupting units, and are in the range of 1.1 to 1.6 times the value obtained by dividing the clamping voltage of the all-point arrester by the number of the interrupting units connected in series in the interrupting section.Type: GrantFiled: May 28, 2019Date of Patent: April 30, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Takashi Inagaki, Sho Tokoyoda, Hiroki Ito
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Publication number: 20240093036Abstract: A composite particle of the present invention includes an inorganic particle and a graphene oxide particle that coats at least a part of the inorganic particle, and the graphene oxide particle is a modified graphene oxide particle having a surface modified with a hydrocarbon group optionally having a substituent.Type: ApplicationFiled: September 30, 2021Publication date: March 21, 2024Applicant: TDK CORPORATIONInventors: Yuta NAKAGAWA, Takashi INAGAKI
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Publication number: 20230416460Abstract: A compound having a chain structure consisting of an aromatic ring group, an ether oxygen atom, a methylene group, an aromatic ring group, a methylene group, an ether oxygen atom, and an aromatic ring group bonded in an order, wherein a hydroxymethyl group is bonded to a carbon atom of the aromatic ring group disposed at a first end of the chain structure, and one end group selected from a hydroxyl group, an amino group, an amide group, and a carboxyl group is bonded to a carbon atom of the aromatic ring group disposed at a second end of the chain structure.Type: ApplicationFiled: February 25, 2022Publication date: December 28, 2023Applicant: TDK CORPORATIONInventors: Takashi INAGAKI, Hiroshi ITO
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Publication number: 20230411091Abstract: A direct-current circuit breaker that includes: an interrupter; a resonance circuit including a capacitor, a reactor, and an activation switch; a voltage detection circuit; a charging circuit including a charging resistor and a charging switch; and a control circuit. The control circuit closes the charging switch to charge the capacitor, and thereafter, the control circuit opens the charging switch when the charging voltage exceeds a first voltage value, and closes the charging switch when the charging voltage falls below a second voltage value that is smaller than the first voltage value.Type: ApplicationFiled: December 9, 2020Publication date: December 21, 2023Applicant: Mitsubishi Electric CorporationInventors: Takashi INAGAKI, Sho TOKOYODA
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Patent number: 11732124Abstract: A compound comprises a resin composition containing an epoxy resin, a phenol resin, a wax, and an imidazole compound, and a metal element-containing powder, wherein the epoxy resin comprises a crystalline epoxy resin, the wax comprises a montanic acid ester, and the content of the metal element-containing powder is 90 mass % or more based on the total mass of the compound.Type: GrantFiled: November 30, 2017Date of Patent: August 22, 2023Assignee: RESONAC CORPORATIONInventors: Kazumasa Takeuchi, Chio Ishihara, Hideo Maeda, Masahiko Osaka, Takashi Inagaki
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Patent number: 11505694Abstract: A resin composition including: a thermosetting resin component including a mesogen; and a phosphorus atom-containing thermoplastic polymer type frame retardant, wherein the thermoplastic polymer type frame retardant is a phosphorous atom-containing formed by polymerizing or copolymerizing one of monomers represented by general formulae (1) and (2) below, wherein, in the general formulae (1) and (2), each of R1 and R2 is any one of an alkyl group, an alkoxy group, an aryl group and an aryloxy group, R1 and R2 being different or identical, and R3 is a methyl group or a hydrogen atom.Type: GrantFiled: March 4, 2019Date of Patent: November 22, 2022Assignee: TDK CORPORATIONInventors: Takashi Inagaki, Junpei Hayama
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Patent number: 11434359Abstract: A resin composition including: a thermosetting resin component including a mesogen; and a phosphorus atom-containing thermoplastic polymer type frame retardant, wherein the thermoplastic polymer type frame retardant is a phosphorous atom-containing formed by polymerizing or copolymerizing one of monomers represented by general formulae (1) and (2) below, wherein, in the general formulae (1) and (2), each of R1 and R2 is any one of an alkyl group, an alkoxy group, an aryl group and an aryloxy group, R1 and R2 being different or identical, and R3 is a methyl group or a hydrogen atom.Type: GrantFiled: March 4, 2019Date of Patent: September 6, 2022Assignee: TDK CORPORATIONInventors: Takashi Inagaki, Junpei Hayama
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Publication number: 20220238265Abstract: A multilayer coil device includes an element formed by laminating a coil conductor and a magnetic element body. The magnetic element body includes soft magnetic particles and an epoxy resin. The soft magnetic particles include soft magnetic metal particles. The epoxy resin has an epoxy value of 150 or less. The epoxy resin is filled in gap spaces between the soft magnetic particles.Type: ApplicationFiled: January 10, 2022Publication date: July 28, 2022Applicant: TDK CORPORATIONInventors: Shinichi KONDO, Takashi INAGAKI, Ryuichi WADA, Yusuke NAGAI, Takashi SUZUKI
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Patent number: 11380500Abstract: A direct-current circuit breaker includes a circuit breaker unit and a circuit unit that generates an oscillating current. The circuit unit includes a capacitor and a reactor, a high-speed closer, and a lightning arrester. The circuit breaker unit and the high-speed closer are aligned in a first direction with a distance therebetween that is equal to or longer than a certain spatial distance. The capacitor and the lightning arrester are aligned in a second direction intersecting the first direction with a distance therebetween that is equal to or longer than the spatial distance. A combination of the circuit breaker unit with the high-speed closer and a combination of the capacitor with the lightning arrester are aligned in a third direction intersecting the first direction and the second direction with a distance therebetween that is equal to or longer than the spatial distance.Type: GrantFiled: December 10, 2018Date of Patent: July 5, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Sho Tokoyoda, Takashi Inagaki, Kenji Kamei
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Publication number: 20220208490Abstract: A breaking device includes an interrupting section including interrupting units in which main interrupters, impedance circuits, and unit arresters are connected in parallel to each other, the main interrupters being connected in series, a resonant circuit section including a reactor, a capacitor, and a closing switch and connected in parallel to the interrupting section, and an all-point arrester connected in parallel to the interrupting section via the reactor. The clamping voltages of the unit arresters are equal among the interrupting units, and are in the range of 1.1 to 1.6 times the value obtained by dividing the clamping voltage of the all-point arrester by the number of the interrupting units connected in series in the interrupting section.Type: ApplicationFiled: May 28, 2019Publication date: June 30, 2022Applicant: Mitsubishi Electric CorporationInventors: Takashi INAGAKI, Sho TOKOYODA, Hiroki ITO
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Patent number: 11367585Abstract: A direct-current circuit breaker includes a first main circuit breaker inserted into a first direct-current line, a resonance circuit connected in parallel to the first main circuit breaker, a MOSA connected in parallel to the first main circuit breaker via the resonance circuit, a second main circuit breaker inserted into a second direct-current line, a switch connected in series to the second main circuit breaker, a resonance circuit connected in parallel to the second main circuit breaker, and a MOSA connected in parallel to the second main circuit breaker via the resonance circuit. The second direct-current line is a line that branches off from the first direct-current line and returns to the first direct-current line. The switch is inserted upstream of the second direct-current line.Type: GrantFiled: July 11, 2017Date of Patent: June 21, 2022Assignee: Mitsubishi Electric CorporationInventors: Takashi Inagaki, Sho Tokoyoda, Kenji Kamei, Ryo Kimura, Makoto Miyashita
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Publication number: 20220185948Abstract: An epoxy resin having end groups each having an epoxy group that are disposed at both ends respectively, and between the end groups, either or both of a first structure in which an aromatic cyclic group, an ether oxygen, a methylene group, an aromatic cyclic group, a methylene group, an ether oxygen and an aromatic cyclic group are bonded together in this order and a second structure in which an aromatic cyclic group, a methylene group, an ether oxygen, an aromatic cyclic group, an ether oxygen, a methylene group and an aromatic cyclic group are bonded together in this order.Type: ApplicationFiled: March 24, 2020Publication date: June 16, 2022Applicant: TDK CORPORATIONInventors: Takashi INAGAKI, Ayano SATO
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Publication number: 20220185959Abstract: A compound having end groups each having a reactive group that are disposed at both ends respectively, and between the end groups, either or both of a first structure in which an aromatic cyclic group, an ether oxygen, a methylene group, an aromatic cyclic group, a methylene group, an ether oxygen and an aromatic cyclic group are bonded together in this order and a second structure in which an aromatic cyclic group, a methylene group, an ether oxygen, an aromatic cyclic group, an ether oxygen, a methylene group and an aromatic cyclic group are bonded together in this order.Type: ApplicationFiled: March 24, 2020Publication date: June 16, 2022Applicant: TDK CORPORATIONInventor: Takashi INAGAKI
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Patent number: 11289899Abstract: A direct-current breaking device includes a main circuit breaker inserted on a DC line, a resonant circuit connected in parallel with the main circuit breaker, and a MOSA connected in parallel with the main circuit breaker via the resonant circuit. The resonant circuit includes first, second, third, and fourth switching elements, a capacitor, and a reactor. A first circuit unit including the first switching element and the second switching element connected in series with each other, and a second circuit unit including the third switching element and the fourth switching element connected in series with each other are connected in parallel. The capacitor is connected between a connection point of the first switching element and the second switching element and a connection point of the third switching element and the fourth switching element to constitute a bridge circuit. The bridge circuit and the reactor are in series with each other.Type: GrantFiled: August 24, 2018Date of Patent: March 29, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Sho Tokoyoda, Takashi Inagaki, Kenji Kamei
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Patent number: 11233391Abstract: In order to provide a DC interrupting device that does not easily cause erroneous melting of current-limiting fuses at normal times with no fault current, and that can also deliver good current-limiting performance at the time of occurrence of fault current, the DC interrupting device includes: a (k?1)th current path including a (k?1)th current-limiting fuse, where k is an integer of not less than two and not more than N, and N is an integer of not less than two; and a kth current path connected in parallel to the (k?1)th current path and including a kth current-limiting fuse. The inductance value of the inductance component of the kth current path is higher than the inductance value of the inductance component of the (k?1)th current path.Type: GrantFiled: November 9, 2017Date of Patent: January 25, 2022Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Motohiro Sato, Katsuhiko Horinouchi, Sho Tokoyoda, Takashi Inagaki
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Publication number: 20210358702Abstract: A direct-current circuit breaker includes a circuit breaker unit and a circuit unit that generates an oscillating current. The circuit unit includes a capacitor and a reactor, a high-speed closer, and a lightning arrester. The circuit breaker unit and the high-speed closer are aligned in a first direction with a distance therebetween that is equal to or longer than a certain spatial distance. The capacitor and the lightning arrester are aligned in a second direction intersecting the first direction with a distance therebetween that is equal to or longer than the spatial distance. A combination of the circuit breaker unit with the high-speed closer and a combination of the capacitor with the lightning arrester are aligned in a third direction intersecting the first direction and the second direction with a distance therebetween that is equal to or longer than the spatial distance.Type: ApplicationFiled: December 10, 2018Publication date: November 18, 2021Applicant: Mitsubishi Electric CorporationInventors: Sho TOKOYODA, Takashi INAGAKI, Kenji KAMEI
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Patent number: 11069502Abstract: A DC circuit breaker includes a fuse unit to interrupt a large current with a fuse, and the fuse unit includes a high-speed disconnector that is connected in parallel to the fuse and is opened when a fault current is detected.Type: GrantFiled: April 19, 2018Date of Patent: July 20, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Sho Tokoyoda, Takashi Inagaki, Kenji Kamei
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Publication number: 20210134544Abstract: A direct-current circuit breaker includes a first main circuit breaker inserted into a first direct-current line, a resonance circuit connected in parallel to the first main circuit breaker, a MOSA connected in parallel to the first main circuit breaker via the resonance circuit, a second main circuit breaker inserted into a second direct-current line, a switch connected in series to the second main circuit breaker, a resonance circuit connected in parallel to the second main circuit breaker, and a MOSA connected in parallel to the second main circuit breaker via the resonance circuit. The second direct-current line is a line that branches off from the first direct-current line and returns to the first direct-current line. The switch is inserted upstream of the second direct-current line.Type: ApplicationFiled: July 11, 2017Publication date: May 6, 2021Applicant: Mitsubishi Electric CorporationInventors: Takashi INAGAKI, Sho TOKOYODA, Kenji KAMEI, Ryo KIMURA, Makoto MIYASHITA
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Publication number: 20210111556Abstract: A direct-current breaking device includes a main circuit breaker inserted on a DC line, a resonant circuit connected in parallel with the main circuit breaker, and a MOSA connected in parallel with the main circuit breaker via the resonant circuit. The resonant circuit includes first, second, third, and fourth switching elements, a capacitor, and a reactor. A first circuit unit including the first switching element and the second switching element connected in series with each other, and a second circuit unit including the third switching element and the fourth switching element connected in series with each other are connected in parallel. The capacitor is connected between a connection point of the first switching element and the second switching element and a connection point of the third switching element and the fourth switching element to constitute a bridge circuit. The bridge circuit and the reactor are in series with each other.Type: ApplicationFiled: August 24, 2018Publication date: April 15, 2021Applicant: Mitsubishi Electric CorporationInventors: Sho TOKOYODA, Takashi INAGAKI, Kenji KAMEI
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Publication number: 20210070978Abstract: A resin composition including: a thermosetting resin component including a mesogen; and a phosphorus atom-containing thermoplastic polymer type frame retardant, wherein the thermoplastic polymer type frame retardant is a phosphorous atom-containing formed by polymerizing or copolymerizing one of monomers represented by general formulae (1) and (2) below, wherein, in the general formulae (1) and (2), each of R1 and R2 is any one of an alkyl group, an alkoxy group, an aryl group and an aryloxy group, R1 and R2 being different or identical, and R3 is a methyl group or a hydrogen atom.Type: ApplicationFiled: March 4, 2019Publication date: March 11, 2021Applicant: TDK CORPORATIONInventors: Takashi INAGAKI, Junpei HAYAMA