Patents by Inventor Takahiro Kitagawa
Takahiro Kitagawa 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: 20240128406Abstract: A nitride semiconductor light-emitting element includes: a nitride semiconductor that has two resonator faces opposed to each other; and a dielectric multilayer film that is layered on at least one resonator face of the two resonator faces. For example, the dielectric multilayer film layered on a resonator face includes a first dielectric film layered on the resonator face and a second dielectric film layered on the first dielectric film. The first dielectric film includes aluminum oxynitride. The second dielectric film includes aluminum oxide. The first dielectric film is a crystalline film. At least one of chemical elements of yttrium or lanthanum is added to the first dielectric film. At least one of chemical elements of yttrium or lanthanum is added to the second dielectric film.Type: ApplicationFiled: December 21, 2023Publication date: April 18, 2024Inventors: Shinji YOSHIDA, Hideo KITAGAWA, Takahiro OKAGUCHI
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Patent number: 11945729Abstract: A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element M on the nickel cobalt complex hydroxide particles.Type: GrantFiled: December 3, 2021Date of Patent: April 2, 2024Assignee: NICHIA CORPORATIONInventors: Hideki Yoshida, Masato Sonoo, Takahiro Kitagawa
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Patent number: 11945882Abstract: Crystals of the compound represented by formula (1), a method for the production thereof, and a method for producing an antibody-drug conjugate using the crystals.Type: GrantFiled: August 30, 2018Date of Patent: April 2, 2024Assignee: DAIICHI SANKYO COMPANY, LIMITEDInventors: Tatsuya Yamaguchi, Takashi Kouko, Shigeru Noguchi, Yohei Yamane, Fumikatsu Kondo, Takahiro Aoki, Tadahiro Takeda, Kohei Sakanishi, Hitoshi Sato, Tsuyoshi Ueda, Shinji Matuura, Kei Kurahashi, Yutaka Kitagawa, Tatsuya Nakamura
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Publication number: 20240093084Abstract: A chemical fluid for underground injection includes an inorganic substance, an antioxidant (e.g. ascorbic acid, gluconic acid, or a salt thereof, or ?-acetyl-?-butyrolactone, or bisulfite, or disulfite), and water. The inorganic substance may be a colloidal particle or a powder. The inorganic substance may be present in the chemical fluid in amounts of 0.001% by mass to 50% by mass based on the total mass of the chemical fluid for underground injection. The antioxidant may be present in the chemical fluid at a ratio of 0.0001 to 2 of the mass of the antioxidant to the mass of the inorganic substance. A surface of the inorganic substance may be coated with a silane compound. The chemical fluid may further include an anionic surfactant, a cationic surfactant, an amphoteric surfactant, a nonionic surfactant, or a mixture thereof.Type: ApplicationFiled: January 11, 2022Publication date: March 21, 2024Applicants: NISSAN CHEMICAL CORPORATION, NISSAN CHEMICAL AMERICA CORPORATIONInventors: Takahiro OHORI, Hirotake KITAGAWA, Satoru MURAKAMI, Samuel MAGUIRE-BOYLE, John SOUTHWELL
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Patent number: 11913862Abstract: The present invention aims to provide core-shell particles that can be used in a method of separating a substance to be separated and that allow obtainment of a highly purified product. Each of a plurality of core-shell particles (C) of the present invention includes a core layer (P) as magnetic silica particles containing the magnetic metal oxide particles (A) and a shell layer (Q) that is a silica layer on a surface of the core layer (P), an average thickness of a plurality of shell layers (Q) being 3 to 3000 nm, wherein a weight percentage of the magnetic metal oxide particles (A) in the core layer (P) is 60 to 95 wt % based on a weight of the core layer (P), and the plurality of core-shell particles (C) have a particle size distribution with a coefficient of variation of 50% or less.Type: GrantFiled: June 7, 2019Date of Patent: February 27, 2024Assignee: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Takahiro Kitagawa, Masumi Ueda
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Patent number: 11862796Abstract: A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter DSEM of from 0.5 ?m to less than 3 ?m and D50/DSEM of 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.Type: GrantFiled: February 23, 2022Date of Patent: January 2, 2024Assignee: NICHIA CORPORATIONInventors: Tomooki Kawasaki, Kenichi Kobayashi, Takahiro Kitagawa
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Publication number: 20220181621Abstract: A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter DSEM of from 0.5 ?m to less than 3 ?m and D50/DSEM of 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.Type: ApplicationFiled: February 23, 2022Publication date: June 9, 2022Applicant: NICHIA CORPORATIONInventors: Tomooki KAWASAKI, Kenichi KOBAYASHI, Takahiro KITAGAWA
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Patent number: 11296317Abstract: A method of producing a positive-electrode active material for a non-aqueous electrolyte secondary battery is provided. The method includes obtaining a precipitate containing nickel and manganese from a solution containing nickel and manganese, heat-treating the resulting precipitate at a temperature of from 850° C. to less than 1100° C. to obtain a first heat-treated product, mixing the first heat-treated product and a lithium compound, and heat-treating the resulting lithium-containing mixture at a temperature of from 550° C. to 1000° C. to obtain a second heat-treated product. The second heat-treated product contains a group of lithium transition metal composite oxide particles having an average particle diameter DSEM of from 0.5 ?m to less than 3 ?m and D50/DSEM of 1 to 2.5. The lithium transition metal composite oxide particles have a spinel structure based on nickel and manganese.Type: GrantFiled: May 31, 2018Date of Patent: April 5, 2022Assignee: NICHIA CORPORATIONInventors: Tomooki Kawasaki, Kenichi Kobayashi, Takahiro Kitagawa
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Publication number: 20220089457Abstract: A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element M on the nickel cobalt complex hydroxide particles.Type: ApplicationFiled: December 3, 2021Publication date: March 24, 2022Applicant: NICHIA CORPORATIONInventors: Hideki YOSHIDA, Masato SONOO, Takahiro KITAGAWA
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Patent number: 11220438Abstract: A method for producing a nickel cobalt complex hydroxide includes first crystallization of supplying a solution containing Ni, Co and Mn, a complex ion forming agent and a basic solution separately and simultaneously to one reaction vessel to obtain nickel cobalt complex hydroxide particles, and a second crystallization of, after the first crystallization, further supplying a solution containing nickel, cobalt, and manganese, a solution of a complex ion forming agent, a basic solution, and a solution containing said element M separately and simultaneously to the reaction vessel to crystallize a complex hydroxide particles containing nickel, cobalt, manganese and said element M on the nickel cobalt complex hydroxide particles crystallizing a complex hydroxide particles comprising Ni, Co, Mn and the element M on the nickel cobalt complex hydroxide particles.Type: GrantFiled: May 13, 2019Date of Patent: January 11, 2022Assignee: NICHIA CORPORATIONInventors: Hideki Yoshida, Masato Sonoo, Takahiro Kitagawa
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Publication number: 20210247278Abstract: The present invention aims to provide core-shell particles that can be used in a method of separating a substance to be separated and that allow obtainment of a highly purified product. Each of a plurality of core-shell particles (C) of the present invention includes a core layer (P) as magnetic silica particles containing the magnetic metal oxide particles (A) and a shell layer (Q) that is a silica layer on a surface of the core layer (P), an average thickness of a plurality of shell layers (Q) being 3 to 3000 nm, wherein a weight percentage of the magnetic metal oxide particles (A) in the core layer (P) is 60 to 95 wt % based on a weight of the core layer (P), and the plurality of core-shell particles (C) have a particle size distribution with a coefficient of variation of 50% or less.Type: ApplicationFiled: June 7, 2019Publication date: August 12, 2021Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Takahiro KITAGAWA, Masumi UEDA
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Patent number: 10929585Abstract: A recording medium recording a program for a process, the process includes: calculating an amount of distortion in a via of a printed circuit board based on an expression using coefficient m, ??={(L×?×?t×E)/(D×T)}×m, where ?? is the amount of distortion, L is a length of the via, ? is a thermal expansion coefficient of a base material, ?t is a temperature change of an environment, E is a Young's modulus, D is a diameter of the via, and T is a thickness of plating in the via; and calculating a lifetime of the via based on an expression, M=N/(n×365), where M is the lifetime of the via, n is a frequency of the temperature change, and N is the number of cycles of the lifetime satisfying an expression Nx=C/??.Type: GrantFiled: January 4, 2019Date of Patent: February 23, 2021Assignee: FUJITSU LIMITEDInventors: Mitsunori Abe, Yoshiyuki Hiroshima, Takahiro Kitagawa, Naoki Nakamura, Akiko Matsui
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Patent number: 10906481Abstract: A protector includes a case configured to accommodate a wire harness, wherein the case is provided with an insertion hole configured such that the wire harness is inserted through the insertion hole, a rib is provided on an inner surface of the case, the inner surface defining the insertion hole, and the rib protruding inwardly from the inner surface, and the rib is configured to: be fitted in a groove portion provided in an outer peripheral surface of a corrugated tube that is externally mounted on the wire harness; and hold a plug configured to close the insertion hole.Type: GrantFiled: March 4, 2019Date of Patent: February 2, 2021Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, Yazaki CorporationInventors: Kouichi Inoue, Takahiro Kitagawa, Kunihito Ogura
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Patent number: 10903492Abstract: A method of producing a nickel-cobalt composite hydroxide includes: preparing a first solution containing nickel ions and cobalt ions; preparing a second solution containing tungsten ions and having a pH of 10 or more; preparing a third solution containing a complex ion-forming factor; preparing a liquid medium having a pH in a range of 10 to 13.5; supplying the first solution, the second solution, and the third solution separately and simultaneously to the liquid medium to obtain a reacted solution having a pH in a range of 10 to 13.5; and obtaining the nickel-cobalt composite hydroxide containing nickel, cobalt, and tungsten from the reacted solution.Type: GrantFiled: October 9, 2019Date of Patent: January 26, 2021Assignee: NICHIA CORPORATIONInventors: Hideki Yoshida, Masato Sonoo, Takahiro Kitagawa
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Patent number: 10863629Abstract: A method of manufacturing a through hole of a substrate includes forming, to the substrate, a cutting hole surrounding a removal-target-part such that a connection part of the substrate remains, the connection part that connects the removal-target-part that is removed from the substrate and a remaining part other than the removal-target-part that has been removed, along a cutting line of the through hole formed to the substrate; applying plating on an area including an inner peripheral wall face of the cutting hole of the substrate; applying a film covering an opening of the cutting hole on a surface of the substrate applied with the plating and performing exposure and development of the film to form an etching resist covering an area including the opening of the cutting hole; performing etching of the plating applied on the substrate; removing the etching resist; and cutting the connection part to remove the removal-target-part.Type: GrantFiled: July 17, 2019Date of Patent: December 8, 2020Assignee: FUJITSU LIMITEDInventors: Kiyoyuki Hatanaka, Shigeru Sugino, Takahiro Kitagawa, Ryo Kanai, Nobuo Taketomi, Mitsunori Abe
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Patent number: 10783309Abstract: An information processing device includes a processor that calculates a distortion amount that represents an amount of distortion generated in a via of a printed circuit board based on a following equation, ??={(L×?×?t×E)/(D×T)}×m×?×?×?; calculates a lifetime of the via based on a following equation, M=N/(n×365); changes, when the calculated lifetime is outside a first setting range, at least two design values of the via length, the thermal expansion coefficient, the Young's modulus, the via diameter, or the plating thickness within a second setting range corresponding to the at least two design values respectively; gives points of two perspectives affected by the change and outputs a graph that indicates an impact degree according to the points of the two perspectives for each combination of the at least two design values.Type: GrantFiled: July 3, 2019Date of Patent: September 22, 2020Assignee: FUJITSU LIMITEDInventors: Mitsunori Abe, Yoshiyuki Hiroshima, Takahiro Kitagawa, Akiko Matsui, Naoki Nakamura
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Patent number: 10624216Abstract: A wiring board includes, a base plate that has a first surface, a second surface opposite to the first surface, and a side surface coupled to the first surface and the second surface, a conductor provided on the side surface, and a protrusion provided over the side surface. The protrusion partitions the conductor into a first portion on the side surface that extends to the first surface and a second portion on the side surface that extends to the second surface. The protrusion has a solder wettability lower than the conductor and protrudes from the conductor.Type: GrantFiled: October 3, 2018Date of Patent: April 14, 2020Assignee: FUJITSU LIMITEDInventors: Nobuo Taketomi, Takahiro Kitagawa, Mitsunori Abe, Shigeru Sugino, Kiyoyuki Hatanaka, Shigeo Iriguchi, Ryo Kanai
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Publication number: 20200052296Abstract: A method of producing a nickel-cobalt composite hydroxide includes: preparing a first solution containing nickel ions and cobalt ions; preparing a second solution containing tungsten ions and having a pH of 10 or more; preparing a third solution containing a complex ion-forming factor; preparing a liquid medium having a pH in a range of 10 to 13.5; supplying the first solution, the second solution, and the third solution separately and simultaneously to the liquid medium to obtain a reacted solution having a pH in a range of 10 to 13.5; and obtaining the nickel-cobalt composite hydroxide containing nickel, cobalt, and tungsten from the reacted solution.Type: ApplicationFiled: October 9, 2019Publication date: February 13, 2020Applicant: NICHIA CORPORATIONInventors: Hideki YOSHIDA, Masato SONOO, Takahiro KITAGAWA
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Publication number: 20200037452Abstract: A method of manufacturing a through hole of a substrate includes forming, to the substrate, a cutting hole surrounding a removal-target-part such that a connection part of the substrate remains, the connection part that connects the removal-target-part that is removed from the substrate and a remaining part other than the removal-target-part that has been removed, along a cutting line of the through hole formed to the substrate; applying plating on an area including an inner peripheral wall face of the cutting hole of the substrate; applying a film covering an opening of the cutting hole on a surface of the substrate applied with the plating and performing exposure and development of the film to form an etching resist covering an area including the opening of the cutting hole; performing etching of the plating applied on the substrate; removing the etching resist; and cutting the connection part to remove the removal-target-part.Type: ApplicationFiled: July 17, 2019Publication date: January 30, 2020Applicant: FUJITSU LIMITEDInventors: Kiyoyuki Hatanaka, Shigeru Sugino, Takahiro Kitagawa, Ryo Kanai, Nobuo Taketomi, Mitsunori Abe
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Publication number: 20200026816Abstract: An information processing device includes a processor that calculates a distortion amount that represents an amount of distortion generated in a via of a printed circuit board based on a following equation, ??={(L×?×?t×E)/(D×T)}×m×?×?×?; calculates a lifetime of the via based on a following equation, M=N/(n×365); changes, when the calculated lifetime is outside a first setting range, at least two design values of the via length, the thermal expansion coefficient, the Young's modulus, the via diameter, or the plating thickness within a second setting range corresponding to the at least two design values respectively; gives points of two perspectives affected by the change and outputs a graph that indicates an impact degree according to the points of the two perspectives for each combination of the at least two design values.Type: ApplicationFiled: July 3, 2019Publication date: January 23, 2020Applicant: FUJITSU LIMITEDInventors: Mitsunori Abe, YOSHIYUKI HIROSHIMA, Takahiro KITAGAWA, AKIKO MATSUI, Naoki Nakamura