Patents by Inventor Hideyuki Kumakiri
Hideyuki Kumakiri 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: 7960050Abstract: A secondary battery includes an electrode group 5 formed by winding a positive electrode plate 1 and a negative electrode plate 2 with a separator 3 interposed therebetween. Each of the positive and negative electrode plates 1 and 2 includes a current collector 1 and mixture layers 8 and 9 each containing an active material and formed on the surface of the current collector 1. A plurality of trenches 30 are formed in the surfaces of the mixture layers 8 and 9 of at least one of the positive electrode plate 1 and the negative electrode plate 2. The trenches 30 have curvature portions at side edges 30b and bottom centers 30a thereof.Type: GrantFiled: October 30, 2007Date of Patent: June 14, 2011Assignee: Panasonic CorporationInventors: Hideyuki Kumakiri, Seiichi Katou
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Patent number: 7842418Abstract: An electrode plate includes a both-surface coated part 14 in which an electrode active material layer 13 is provided on both surfaces of a current collector core material 12, a core material exposed part 18 in which the negative electrode active material layer 13 is not provided, and a one-surface coated part 17 in which the negative electrode active material layer 13 is provided on only one surface of the current collector core material 12. A plurality of grooves 10 are formed in both surfaces of the both-surface coated part 14 and the grooves 10 are not formed in the one-surface coated part 17.Type: GrantFiled: July 22, 2008Date of Patent: November 30, 2010Assignee: Panasonic CorporationInventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu
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Patent number: 7806943Abstract: A secondary battery includes an electrode plate group (1) in which a positive electrode plate (2) and a negative electrode plate (3) are wound or stacked with a separator (4) interposed therebetween and a battery case (7) in which the electrode plate group (1) and an electrolyte are contained. At least one of the positive electrode plate (2) and the negative electrode plate (3) includes a porous protective film (28) formed on a surface of an active material layer. In a surface of the at least one of the electrode plates on which the porous protective film (28) is provided, a plurality of grooves (10) are formed, and the grooves (10) are also formed in the surface of the active material so that each of the grooves (10) extends from the surface of the porous protective film (28) to the surface of the active material layer.Type: GrantFiled: July 16, 2008Date of Patent: October 5, 2010Assignee: Panasonic CorporationInventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Seiichi Kato
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Publication number: 20100136394Abstract: A secondary battery includes an electrode plate group (1) in which a positive electrode plate (2) and a negative electrode plate (3) are wound or stacked with a separator (4) interposed therebetween and a battery case (7) in which the electrode plate group (1) and an electrolyte are contained. At least one of the positive electrode plate (2) and the negative electrode plate (3) includes a porous protective film (28) formed on a surface of an active material layer. In a surface of the at least one of the electrode plates on which the porous protective film (28) is provided, a plurality of grooves (10) are formed, and the grooves (10) are also formed in the surface of the active material so that each of the grooves (10) extends from the surface of the porous protective film (28) to the surface of the active material layer.Type: ApplicationFiled: July 16, 2008Publication date: June 3, 2010Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Seiichi Kato
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Patent number: 7695864Abstract: In an electrode plate 3 including a both-surface coated part 14 in which an active material layer 13 and a porous protective film 28 are formed, a core material exposed part 18 which is an end part of the current collector core material 12 and in which the active material layer 13 and the porous protective film 28 are not formed, and a one-surface coated part 17 which is provided between the both-surface coated part 14 and the core material exposed part 18 and in which the active material layer 13 and the porous protective film 28 are formed, a plurality of grooves 10 are formed in both surfaces of the both-surface coated part 14 and are not formed in the one-surface coated part 17. The grooves 10 are formed so that each of the grooves extends from the porous protective film 28 to the active material layer 13.Type: GrantFiled: July 22, 2008Date of Patent: April 13, 2010Assignee: Panasonic CorporationInventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu, Seiichi Kato
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Patent number: 7687196Abstract: A prismatic battery having advantages of both a rectangular battery and a cylindrical battery and having excellent properties is provided. Furthermore, a method of manufacturing the prismatic battery, suppressing the occurrence of defects in manufacturing the prismatic batteries and having an excellent productivity is provided. A prismatic battery including: an electrode plate group, an electrolyte and a battery case for accommodating the electrode plate group and the electrolyte; wherein the side face of the battery case includes a cylindrical head portion; a prismatic body potion for accommodating the electrode plate group and the electrolyte; and a transition portion located between the body portion and the head portion.Type: GrantFiled: June 30, 2004Date of Patent: March 30, 2010Assignee: Panasonic CorporationInventors: Hideyuki Kumakiri, Shintaro Shimizu, Akira Yoneyama, Yoshihiro Bouki, Takuma Iida
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Publication number: 20100035140Abstract: In an electrode plate 3 including a both-surface coated part 14 in which an active material layer 13 and a porous protective film 28 are formed, a core material exposed part 18 which is an end part of the current collector core material 12 and in which the active material layer 13 and the porous protective film 28 are not formed, and a one-surface coated part 17 which is provided between the both-surface coated part 14 and the core material exposed part 18 and in which the active material layer 13 and the porous protective film 28 are formed, a plurality of grooves 10 are formed in both surfaces of the both-surface coated part 14 and are not formed in the one-surface coated part 17. The grooves 10 are formed so that each of the grooves extends from the porous protective film 28 to the active material layer 13.Type: ApplicationFiled: July 22, 2008Publication date: February 11, 2010Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu, Seiichi Kato
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Publication number: 20090325045Abstract: An electrode plate includes a both-surface coated part 14 in which an electrode active material layer 13 is provided on both surfaces of a current collector core material 12, a core material exposed part 18 in which the negative electrode active material layer 13 is not provided, and a one-surface coated part 17 in which the negative electrode active material layer 13 is provided on only one surface of the current collector core material 12. A plurality of grooves 10 are formed in both surfaces of the both-surface coated part 14 and the grooves 10 are not formed in the one-surface coated part 17.Type: ApplicationFiled: July 22, 2008Publication date: December 31, 2009Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu
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Publication number: 20090081533Abstract: A battery electrode plate (19) is produced via an active material impregnation step for impregnating an entire porous core substrate shaped like a thin plate (1) with an active material (3), a pressing step for performing press working on the core substrate to form a plurality of rail shaped protrusions (8), an active material removal step for removing the active material to form core substrate exposed sections (13) by applying ultrasonic vibrations to the rail shaped protrusions, a flattening step for compressing the core substrate exposed sections down to an identical level with the other sections, and a cutting step for cutting predetermined sections including the core substrate exposed sections.Type: ApplicationFiled: November 14, 2008Publication date: March 26, 2009Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Miyahisa, Hideyuki Kumakiri, Takehiko Matsunaga, Koichi Kojima
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Patent number: 7348095Abstract: After accommodating an electrode group in a battery case having a substantially square transverse cross section, making an opening head of the battery case into a cylindrical shape through compression molding, an annular groove is formed by pressing a groove-forming roller sideways against a side surface of the opening head while rotating the battery case with a pressing force being kept applied to the battery case in an axial direction from the opening portion side, or alternatively pressing the groove-forming roller against the opening head from the side surface thereof and concurrently displacing the groove-forming roller in a direction toward the opening portion of the battery case while rotating the battery case. After having an annular supporting portion that bulges inward of the battery case support an opening-sealing member, the opening-sealing member is fixed through caulking by bending the opening end portion of the battery case inward, whereby a battery is manufactured.Type: GrantFiled: January 13, 2003Date of Patent: March 25, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masumi Katsumoto, Hideki Kasahara, Satoshi Yoneyama, Yoshihiro Boki, Masaharu Miyahisa, Hideyuki Kumakiri
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Patent number: 6878173Abstract: A battery electrode plate (19) is produced via an active material impregnation step for impregnating an entire porous core substrate shaped like a thin plate (1) with an active material (3), a pressing step for performing press working on the core substrate to form a plurality of rail shaped protrusions (8), an active material removal step for removing the active material to form core substrate exposed sections (13) by applying ultrasonic vibrations to the rail shaped protrusions, a flattening step for compressing the core substrate exposed sections down to an identical level with the other sections, and a cutting step for cutting predetermined sections including the core substrate exposed sections.Type: GrantFiled: August 29, 2001Date of Patent: April 12, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Miyahisa, Hideyuki Kumakiri, Takehiko Matsunaga, Koichi Kojima
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Publication number: 20050003267Abstract: A prismatic battery having advantages of both a rectangular battery and a cylindrical battery and having excellent properties is provided. Furthermore, a method of manufacturing the prismatic battery, suppressing the occurrence of defects in manufacturing the prismatic batteries and having an excellent productivity is provided. A prismatic battery including: an electrode plate group, an electrolyte and a battery case for accommodating the electrode plate group and the electrolyte; wherein the side face of the battery case includes a cylindrical head portion; a prismatic body potion for accommodating the electrode plate group and the electrolyte; and a transition portion located between the body portion and the head portion.Type: ApplicationFiled: June 30, 2004Publication date: January 6, 2005Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Hideyuki Kumakiri, Shintaro Shimizu, Akira Yoneyama, Yoshihiro Bouki, Takuma Iida
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Publication number: 20040191613Abstract: A battery electrode plate (19) is produced via an active material impregnation step for impregnating an entire porous core substrate shaped like a thin plate (1) with an active material (3), a pressing step for performing press working on the core substrate to form a plurality of rail shaped protrusions (8), an active material removal step for removing the active material to form core substrate exposed sections (13) by applying ultrasonic vibrations to the rail shaped protrusions, a flattening step for compressing the core substrate exposed sections down to an identical level with the other sections, and a cutting step for cutting predetermined sections including the core substrate exposed sections.Type: ApplicationFiled: April 14, 2004Publication date: September 30, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Miyahisa, Hideyuki Kumakiri, Takehiko Matsunaga, Koichi Kojima
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Publication number: 20040191620Abstract: A battery electrode plate (19) is produced via an active material impregnation step for impregnating an entire porous core substrate shaped like a thin plate (1) with an active material (3), a pressing step for performing press working on the core substrate to form a plurality of rail shaped protrusions (8), an active material removal step for removing the active material to form core substrate exposed sections (13) by applying ultrasonic vibrations to the rail shaped protrusions, a flattening step for compressing the core substrate exposed sections down to an identical level with the other sections, and a cutting step for cutting predetermined sections including the core substrate exposed sections.Type: ApplicationFiled: April 14, 2004Publication date: September 30, 2004Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masaharu Miyahisa, Hideyuki Kumakiri, Takehiko Matsunaga, Koichi Kojima
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Publication number: 20030134192Abstract: After accommodating an electrode group in a battery case having a substantially square transverse cross section, making an opening head of the battery case into a cylindrical shape through compression molding, an annular groove is formed by pressing a groove-forming roller sideways against a side surface of the opening head while rotating the battery case with a pressing force being kept applied to the battery case in an axial direction from the opening portion side, or alternatively pressing the groove-forming roller against the opening head from the side surface thereof and concurrently displacing the groove-forming roller in a direction toward the opening portion of the battery case while rotating the battery case. After having an annular supporting portion that bulges inward of the battery case support an opening-sealing member, the opening-sealing member is fixed through caulking by bending the opening end portion of the battery case inward, whereby a battery is manufactured.Type: ApplicationFiled: January 13, 2003Publication date: July 17, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masumi Katsumoto, Hideki Kasahara, Satoshi Yoneyama, Yoshihiro Boki, Masaharu Miyahisa, Hideyuki Kumakiri
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Publication number: 20020182483Abstract: A battery electrode plate (19) is produced via an active material impregnation step for impregnating an entire porous core substrate shaped like a thin plate (1) with an active material (3), a pressing step for performing press working on the core substrate to form a plurality of rail shaped protrusions (8), an active material removal step for removing the active material to form core substrate exposed sections (13) by applying ultrasonic vibrations to the rail shaped protrusions, a flattening step for compressing the core substrate exposed sections down to an identical level with the other sections, and a cutting step for cutting predetermined sections including the core substrate exposed sections.Type: ApplicationFiled: May 22, 2002Publication date: December 5, 2002Inventors: Masaharu Miyahisa, Hideyuki Kumakiri, Takehiko Matsunaga, Koichi Kojima
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Patent number: 6068110Abstract: A conveying holder for cylindrical cell is provided which is capable of stably supporting a cylindrical cell irrespective of variation in outer diameter of the cell or impact during transfer. An outer wall member 20 of which inner diameter is greater than the diameter of a cylindrical cell 7 is provided. A plurality of elastic inner wall portions 21 are concentrically arranged to have a distance from the inner side of the outer wall member 20, each elastic inner wall portion joined at both ends to the outer wall member 20. A cell holding portion 22 is provided projecting inwardly from the inner side of each elastic inner wall portion 21 and having a cell holding surface 29 thereof corresponding in shape to the outer side of the cylindrical cell 7. The cell holding surfaces 29 are arranged along a concentric circle which is smaller in diameter than the cylindrical cell 7 so that they can hold the cylindrical cell 7 in-between under pressure.Type: GrantFiled: September 3, 1997Date of Patent: May 30, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hideyuki Kumakiri, Masaharu Miyahisa, Haruo Tanimura, Saburo Nakatsuka