Patents by Inventor Hidemasa Kawai
Hidemasa Kawai 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: 20230178753Abstract: The positive electrode disclosed herein includes a positive electrode current collector foil, positive electrode active material layers disposed on both surfaces of the current collector foil, a first protection layer disposed adjacent to the positive electrode active material layer on one surface of the current collector foil. The current collector foil has an exposed portion in which the current collector foil is exposed, at least at one end. The first protection layer is located between the exposed portion and the positive electrode active material layer. The first protection layer has an inclined portion in which a thickness of the first protection layer decreases from the positive electrode active material layer side toward the exposed portion. The inclined portion is configured so that an angle to the surface of the current collector foil is constant or decreases toward the exposed portion.Type: ApplicationFiled: November 29, 2022Publication date: June 8, 2023Inventors: Hidemasa KAWAI, Keisuke OTA, Kazuhiro MAEDA, Haruya NAKAI, Taiki NONAKA
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Publication number: 20230135592Abstract: This electrode plate for a secondary battery comprises a thin plate-shaped core formed from a metal foil and an active material layer formed on at least one surface of the core. A melted section of the metal foil forming the core is scattered at an end section of the electrode plate for a secondary battery so as to spread from the plate thickness range of the core to the end face of the active material layer, adheres thereto, and is solidified.Type: ApplicationFiled: February 8, 2021Publication date: May 4, 2023Applicant: SANYO Electric Co., Ltd.Inventors: Hidemasa Kawai, Naoki Uchida, Haruya Nakai
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Patent number: 11094922Abstract: A negative electrode active material slurry is applied to one surface of a strip-shaped negative electrode core so as to form multiple lines of the negative electrode active material slurry, the lines extending in an X direction and being spaced from each other in a Y direction. Subsequently, while keeping the negative electrode core aloft, first hot air is blown toward the negative electrode core from at least a lower side in a vertical direction, and then, while keeping the negative electrode core aloft, first cooling air having a lower temperature than the first hot air is blown toward the negative electrode core from at least the lower side in the vertical direction so as to decrease the temperature of the negative electrode core to 40° C. or lower.Type: GrantFiled: December 16, 2019Date of Patent: August 17, 2021Assignee: SANYO Electric Co., Ltd.Inventors: Hidemasa Kawai, Koichi Katayama, Haruya Nakai
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Publication number: 20200251721Abstract: A negative electrode active material slurry is applied to one surface of a strip-shaped negative electrode core so as to form multiple lines of the negative electrode active material slurry, the lines extending in an X direction and being spaced from each other in a Y direction. Subsequently, while keeping the negative electrode core aloft, first hot air is blown toward the negative electrode core from at least a lower side in a vertical direction, and then, while keeping the negative electrode core aloft, first cooling air having a lower temperature than the first hot air is blown toward the negative electrode core from at least the lower side in the vertical direction so as to decrease the temperature of the negative electrode core to 40° C. or lower.Type: ApplicationFiled: December 16, 2019Publication date: August 6, 2020Applicant: SANYO Electric Co., Ltd.Inventors: Hidemasa Kawai, Koichi Katayama, Haruya Nakai
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Patent number: 9005736Abstract: An electronic component manufacturing method that efficiently grinds a cover layer provided on a substrate even when the substrate is warped includes the step of forming first grooves at intervals in a cover layer provided on a substrate by repeating grinding with a rotary blade at a pitch more than a thickness W of the rotary blade. Next, at least portions provided in the cover layer along the first grooves are removed to reduce the thickness of the cover layer by repeating grinding at a pitch equal to or less than the thickness W of the rotary blade.Type: GrantFiled: June 14, 2012Date of Patent: April 14, 2015Assignee: Murata Manufacturing Co., Ltd.Inventor: Hidemasa Kawai
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Patent number: 8726494Abstract: An elastic material, in which at least the surface thereof is adhesive and conductive, is provided on a plate, and while a substrate constituting a component of an electronic part is held on the surface of the elastic material by the adhesiveness of the elastic material, an element such as a semiconductor chip is mounted at a fixed location on the substrate.Type: GrantFiled: October 6, 2009Date of Patent: May 20, 2014Assignee: Murata Manufacturing Co., Ltd.Inventors: Akio Katsube, Hideo Nakagoshi, Hidemasa Kawai
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Publication number: 20120251791Abstract: An electronic component manufacturing method that efficiently grinds a cover layer provided on a substrate even when the substrate is warped includes the step of forming first grooves at intervals in a cover layer provided on a substrate by repeating grinding with a rotary blade at a pitch more than a thickness W of the rotary blade. Next, at least portions provided in the cover layer along the first grooves are removed to reduce the thickness of the cover layer by repeating grinding at a pitch equal to or less than the thickness W of the rotary blade.Type: ApplicationFiled: June 14, 2012Publication date: October 4, 2012Applicant: MURATA MANUFACTURING CO., LTD.Inventor: Hidemasa KAWAI
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Patent number: 8034475Abstract: A secondary battery includes an anode for a secondary battery, a cathode which absorbs and discharges lithium ions, and an electrolyte which is placed between the anode for the secondary battery and the cathode. The anode for the secondary battery includes an anode active material layer which absorbs and discharges lithium ions, the anode active material layer including a first layer including carbon as a chief ingredient, and a second layer including at least one first element having a theoretical capacity greater than a theoretical capacity of graphite, and at least one second element which has a theoretical capacity equal to or less than the theoretical capacity of graphite. The second layer includes particles, and the particles include the first element and the second element.Type: GrantFiled: June 7, 2010Date of Patent: October 11, 2011Assignee: NEC CorporationInventors: Hironori Yamamoto, Yutaka Bannai, Mariko Miyachi, Jiro Iriyama, Hidemasa Kawai, Masato Shirakata
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Publication number: 20100248031Abstract: A secondary battery includes an anode for a secondary battery, a cathode which absorbs and discharges lithium ions, and an electrolyte which is placed between the anode for the secondary battery and the cathode. The anode for the secondary battery includes an anode active material layer which absorbs and discharges lithium ions, the anode active material layer including a first layer including carbon as a chief ingredient, and a second layer including at least one first element having a theoretical capacity greater than a theoretical capacity of graphite, and at least one second element which has a theoretical capacity equal to or less than the theoretical capacity of graphite. The second layer includes particles, and the particles include the first element and the second element.Type: ApplicationFiled: June 7, 2010Publication date: September 30, 2010Applicant: NEC CorporationInventors: Hironori Yamamoto, Yutaka Bannai, Mariko Miyachi, Jiro Iriyama, Hidemasa Kawai, Masato Shirakata
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Patent number: 7763387Abstract: Since a first layer (a carbon layer 2a) whose chief ingredient is carbon and a second layer (Li absorbing layer 3a) containing particles having a theoretical capacity greater than that of graphite are formed on anode collector 1a, high capacity and high operation voltage can be realized. Since a element having a theoretical capacity equal to or less than that of graphite is added to the particles constituting this second layer, expansion and contraction of volume according to the charge and discharge are suppressed. This enables capacity deterioration to be suppressed even though cycles go on.Type: GrantFiled: May 22, 2003Date of Patent: July 27, 2010Assignee: NEC CorporationInventors: Hironori Yamamoto, Yutaka Bannai, Mariko Miyachi, Jiro Iriyama, Hidemasa Kawai, Masato Shirakata
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Publication number: 20100018041Abstract: An elastic material, in which at least the surface thereof is adhesive and conductive, is provided on a plate, and while a substrate constituting a component of an electronic part is held on the surface of the elastic material by the adhesiveness of the elastic material, an element such as a semiconductor chip is mounted at a fixed location on the substrate.Type: ApplicationFiled: October 6, 2009Publication date: January 28, 2010Applicant: Murata Manufacturing Co., Ltd.Inventors: Akio Katsube, Hideo Nakagoshi, Hidemasa Kawai
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Patent number: 7624492Abstract: An elastic material, in which at least the surface thereof is adhesive and conductive, is provided on a plate, and while a substrate constituting a component of an electronic part is held on the surface of the elastic material by the adhesiveness of the elastic material, an element such as a semiconductor chip is mounted at a fixed location on the substrate.Type: GrantFiled: October 13, 2000Date of Patent: December 1, 2009Assignee: Murata Manufacturing Co., Ltd.Inventors: Akio Katsube, Hideo Nakagoshi, Hidemasa Kawai
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Patent number: 7118831Abstract: An anode with a multi-layer structure including a first layer (21) having carbon as a main component, and a second layer (22) having lithium-ion conductivity and including a material as a main component thereof which can insert and extract lithium ions, or a multi-layer structure including a third layer (23) containing lithium in addition to the first layer and the second layer, and a lithium secondary battery including the same. The lithium secondary battery can be provided in which the battery capacity is substantially enhanced in the voltage range where the battery is actually used while maintaining the higher charge-discharge efficiency and the excellent cycle performance.Type: GrantFiled: April 9, 2003Date of Patent: October 10, 2006Assignee: NEC CorporationInventors: Yutaka Bannai, Hironori Yamamoto, Mariko Miyachi, Ikiko Yamazaki, Koji Utsugi, Jiro Iriyama, Tamaki Miura, Mitsuhiro Mori, Hidemasa Kawai
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Patent number: 6902844Abstract: A film-sealed nonaqueous electrolyte battery comprises: a battery element including a non-aqueous electrolyte; a film case having at least a sealant polymer resin film for sealing the battery element; at least a lead terminal extending from the battery element and projecting from the film case, and the lead terminal with a surface having a contact area in contact directly with the sealant polymer resin film, and at least the contact area of the surface of the lead terminal is coated with an anti-corrosion coating film, wherein the anti-corrosion coating film includes: (A) a polymer of structural units of a phenolic compound, and at least a part of the structural units includes a substituent which comprises an amino group or a substituted amino group; (B) a phosphate compound; and (C) a titanium fluorine compound.Type: GrantFiled: January 31, 2002Date of Patent: June 7, 2005Assignees: NEC Corporation, NEC Tokin Corporation, Nihon Parkerizing Co., Ltd.Inventors: Hiroshi Yageta, Hidemasa Kawai, Masato Shirakata, Tetsuya Takashima, Ikuo Kojima, Norihide Ohyama, Hiroyuki Iizuka
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Publication number: 20050089757Abstract: An anode with a multi-layer structure including a first layer (21) having carbon as a main component, and a second layer (22) having lithium-ion conductivity and including a material as a main component thereof which can insert and extract lithium ions, or a multi-layer structure including a third layer (23) containing lithium in addition to the first layer and the second layer, and a lithium secondary battery including the same. The lithium secondary battery can be provided in which the battery capacity is substantially enhanced in the voltage range where the battery is actually used while maintaining the higher charge-discharge efficiency and the excellent cycle performance.Type: ApplicationFiled: April 9, 2003Publication date: April 28, 2005Inventors: Yutaka Bannai, Hironori Yamamoto, Mariko Miyachi, Ikiko Yamazaki, Koji Utsugi, Jiro Iriyama, Tamaki Miura, Mitsuhiro Mori, Hidemasa Kawai
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Publication number: 20050084758Abstract: Since a first layer (a carbon layer 2a) whose chief ingredient is carbon and a second layer (Li absorbing layer 3a) containing particles having a theoretical capacity greater than that of graphite are formed on anode collector 1a, high capacity and high operation voltage can be realized. Since a element having a theoretical capacity equal to or less than that of graphite is added to the particles constituting this second layer, expansion and contraction of volume according to the charge and discharge are suppressed. This enables capacity deterioration to be suppressed even though cycles go on.Type: ApplicationFiled: May 22, 2003Publication date: April 21, 2005Inventors: Hironori Yamamoto, Yutaka Bannai, Mariko Miyachi, Jiro Iriyama, Hidemasa Kawai, Masato Shirakata
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Publication number: 20020146621Abstract: A film-sealed nonaqueous electrolyte battery comprises: a battery element including a non-aqueous electrolyte; a film case having at least a sealant polymer resin film for sealing the battery element; at least a load terminal extending from the battery element and projecting from the film case, and the lead terminal with a surface having a contact area in contact directly with the sealant polymer resin film, and at least the contact area of the surface of the lead terminal is coated with an anti-corrosion coating film, wherein the anti-corrosion coating film includes: (A) a polymer of structural units of a phenolic compound, and at least a part of the structural units includes a substituent which comprises an amino group or a substituted amino group; (B) a phosphate compound; and (C) a titanium fluorine compound.Type: ApplicationFiled: January 31, 2002Publication date: October 10, 2002Applicant: NEC CORPORATIONInventors: Hiroshi Yageta, Hidemasa Kawai, Masato Shirakata, Tetsuya Takashima, Ikuo Kojima, Norihide Ohyama, Hiroyuki Iizuka
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Patent number: D642978Type: GrantFiled: February 14, 2011Date of Patent: August 9, 2011Assignee: Hitachi Vehicle Energy, LtdInventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru
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Patent number: D644176Type: GrantFiled: February 14, 2011Date of Patent: August 30, 2011Assignee: Hitachi Vehicle Energy, Ltd.Inventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru
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Patent number: D644178Type: GrantFiled: February 14, 2011Date of Patent: August 30, 2011Assignee: Hitachi Vehicle Energy, Ltd.Inventors: Yutaka Sato, Ryuji Kono, Mitsuru Koseki, Hidemasa Kawai, Hideyuki Shibanuma, Naoki Kimura, Keisuke Sawada, Fujio Hirano, Takuro Tsunaki, Takenori Ishizu, Kiyoyuki Sekine, Kinya Aota, Kouichi Kajiwara, Sho Saimaru