Patents by Inventor Tatsuya Kitagawa
Tatsuya 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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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: 20220262761Abstract: The semiconductor device includes: a semiconductor element including a body portion formed in a plate shape, a protection film provided at an outer periphery on one surface of the body portion, and a metal thin film provided adjacently to an inner side of the protection film on the one surface of the body portion; a metal member joined to a surface of the metal thin film on a side opposite to the body portion, by solder; and a mold resin sealing the semiconductor element and the metal member, wherein the surface of the metal thin film on the side opposite to the body portion has, on at least a part of an outer periphery thereof, a projection portion projecting from the surface of the metal thin film, and the solder is not provided on an outer peripheral side from a top of the projection portion.Type: ApplicationFiled: July 29, 2021Publication date: August 18, 2022Applicant: Mitsubishi Electric CorporationInventors: Tatsuya KITAGAWA, Shin UEGAKI, Masao AKIYOSHI, Masaaki TARUYA, Dai YOSHII, Kazuhiro TADA
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Patent number: 11338484Abstract: A member joining method includes: a placement process of arranging a first member and a second member inserted into the first member so that a gap surrounding the second member is provided between the first member and the second member; a filling process of filling a molten resin into the gap and applying pressure to the resin so as to cause at least one member of the first member or the second member to undergo elastic deformation; and a pressure maintaining process of maintaining the pressure until the resin that has been filled into the gap has cured.Type: GrantFiled: June 18, 2019Date of Patent: May 24, 2022Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Fumio Nomizo, Shoichi Tsuchiya, Tatsuya Kitagawa
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Publication number: 20190389105Abstract: A member joining method includes: a placement process of arranging a first member and a second member inserted into the first member so that a gap surrounding the second member is provided between the first member and the second member; a filling process of filling a molten resin into the gap and applying pressure to the resin so as to cause at least one member of the first member or the second member to undergo elastic deformation; and a pressure maintaining process of maintaining the pressure until the resin that has been filled into the gap has cured.Type: ApplicationFiled: June 18, 2019Publication date: December 26, 2019Inventors: Fumio Nomizo, Shoichi Tsuchiya, Tatsuya Kitagawa
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Patent number: 9057148Abstract: A method for producing a polypropylene fiber, which can produce a high strength polypropylene fiber without using a special raw material and/or means is provided. The method for producing a polypropylene fiber includes the step of spinning a melt extruded fiber, the step of keeping cold, and the step of drawing, in which a ratio of a take-off speed with respect to an extrusion speed in the step of spinning the melt-extruded fiber is 50 to 750.Type: GrantFiled: May 30, 2011Date of Patent: June 16, 2015Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, THE UNIVERSITY OF TOKYOInventors: Tatsuya Kitagawa, Tadahisa Iwata, Chizuru Hongo
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Patent number: 8979690Abstract: A toothed belt has therein a core wire (3) including a core thread (1) made of aramid fiber and a filament thread (2) made of nylon fiber, and has belt tooth portions (4) and belt groove portions (5) alternately formed therealong. The core wire (3), the belt tooth portions (4), and the belt groove portions (5) are integrated with one another by a rubber material (7). It should be noted herein that the core thread (1) and the filament thread (2) are integrally twined around each other so that the filament thread (2) is formed in the shape of a plurality of loops around the core thread (1). The filament thread (2) in the shape of the loops enters tooth root portions (9) of the belt tooth portions (4) to be arranged therein. As a result, the tooth root portions (9) are strengthened.Type: GrantFiled: May 24, 2011Date of Patent: March 17, 2015Assignees: Toyota Jidosha Kabushiki Kaisha, Kurashiki Boseki Kabushiki KaishaInventors: Hidetoshi Yomoda, Takashi Nagase, Tatsuya Kitagawa, Kazuya Kusu, Kiyotaka Miyagai, Akira Kasuya
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Patent number: 8778253Abstract: A technique with which a nanofibrous resin spun by electrospinning can be introduced into inner parts of fibers. The process for fiber composite material production is a process which comprises spinning a nanofibrous resin toward split fibers continuously conveyed along a given conveyance route and thereby combining the split fibers with the resin to produce a fiber composite material. The process involves a resin spinning step in which the nanofibrous resin spun with an electrospinning device is flown toward the split fibers. In the resin spinning step, the direction in which the nanofibrous resin proceeds is made to be the same as the conveying direction of the split fibers by blowing an air stream from a blower on the nanofibrous resin.Type: GrantFiled: November 30, 2009Date of Patent: July 15, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Tatsuya Kitagawa
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Patent number: 8771452Abstract: There is provided a process for producing a fiber-reinforced resin material capable of mitigating damage to and defects in reinforcement fibers and of performing lamination with the reinforcement fibers positioned with ease, while at the same time causing them to conform to the shape of the mold with ease at the time of molding.Type: GrantFiled: August 27, 2010Date of Patent: July 8, 2014Assignee: Toyota Jidosha Kabushiki KaishaInventor: Tatsuya Kitagawa
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Publication number: 20140163169Abstract: A method for producing a polypropylene fiber, which can produce a high strength polypropylene fiber without using a special raw material and/or means is provided. The method for producing a polypropylene fiber includes the step of spinning a melt extruded fiber, the step of keeping cold, and the step of drawing, in which a ratio of a take-off speed with respect to an extrusion speed in the step of spinning the melt-extruded fiber is 50 to 750.Type: ApplicationFiled: May 30, 2011Publication date: June 12, 2014Applicants: THE UNIVERSITY OF TOKYO, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Tatsuya Kitagawa, Tadahisa Iwata, Chizuru Hongo
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Publication number: 20130153130Abstract: There is provided a process for producing a fiber-reinforced resin material capable of mitigating damage to and defects in reinforcement fibers and of performing lamination with the reinforcement fibers positioned with ease, while at the same time causing them to conform to the shape of the mold with ease at the time of molding.Type: ApplicationFiled: August 27, 2010Publication date: June 20, 2013Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Tatsuya Kitagawa
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Publication number: 20130072335Abstract: A toothed belt has therein a core wire (3) including a core thread (1) made of aramid fiber and a filament thread (2) made of nylon fiber, and has belt tooth portions (4) and belt groove portions (5) alternately formed therealong. The core wire (3), the belt tooth portions (4), and the belt groove portions (5) are integrated with one another by a rubber material (7). It should be noted herein that the core thread (1) and the filament thread (2) are integrally twined around each other so that the filament thread (2) is formed in the shape of a plurality of loops around the core thread (1). The filament thread (2) in the shape of the loops enters tooth root portions (9) of the belt tooth portions (4) to be arranged therein. As a result, the tooth root portions (9) are strengthened.Type: ApplicationFiled: May 24, 2011Publication date: March 21, 2013Applicants: KURASHIKI BOSEKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hidetoshi Yomoda, Takashi Nagase, Tatsuya Kitagawa, Kazuya Kusu, Kiyotaka Miyagai, Akira Kasuya
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Publication number: 20120228806Abstract: A technique with which a nanofibrous resin spun by electrospinning can be introduced into inner parts of fibers. The process for fiber composite material production is a process which comprises spinning a nanofibrous resin toward split fibers continuously conveyed along a given conveyance route and thereby combining the split fibers with the resin to produce a fiber composite material. The process involves a resin spinning step in which the nanofibrous resin spun with an electrospinning device is flown toward the split fibers. In the resin spinning step, the direction in which the nanofibrous resin proceeds is made to be the same as the conveying direction of the split fibers by blowing an air stream from a blower on the nanofibrous resin.Type: ApplicationFiled: November 30, 2009Publication date: September 13, 2012Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventor: Tatsuya Kitagawa