Patents by Inventor Takeshi Kasamatsu

Takeshi Kasamatsu 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).

  • Electrode structure for non-aqueous electrolyte secondary battery, method for producing the same, and non-aqueous electrolyte secondary battery
    Patent number: 8530084
    Abstract: An electrode 13 has an active material layer 12 formed on each of two whole main surfaces of a current collector 11. A part of an electrode lead 14 overlaps the electrode 13. One end face of the electrode 13 in the width direction of the electrode 13 is flush with one end face of the electrode lead 14. Joints 15 are formed at the one end of the electrode 13 in the width direction. The joints 15 join the electrode 13 and the electrode lead 14 so as to provide electrical continuity between the exposed part of the current collector 11 at the one end face of the electrode 13 in the width direction and the electrode lead 14. The joints 15 are formed, for example, by plasma welding.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: September 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Hitoshi Katayama, Takashi Nonoshita, Takeshi Kasamatsu, Shoichi Imashiku, Seiichi Kato, Masanori Sumihara
  • Electrode plate for battery, electrode group for battery, lithium secondary battery, method for producing electrode plate for battery and apparatus for producing electrode plate for battery
    Patent number: 7842418
    Abstract: 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: Grant
    Filed: July 22, 2008
    Date of Patent: November 30, 2010
    Assignee: Panasonic Corporation
    Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu
  • ELECTRODE STRUCTURE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
    Publication number: 20100285353
    Abstract: An electrode 13 has an active material layer 12 formed on each of two whole main surfaces of a current collector 11. A part of an electrode lead 14 overlaps the electrode 13. One end face of the electrode 13 in the width direction of the electrode 13 is flush with one end face of the electrode lead 14. Joints 15 are formed at the one end of the electrode 13 in the width direction. The joints 15 join the electrode 13 and the electrode lead 14 so as to provide electrical continuity between the exposed part of the current collector 11 at the one end face of the electrode 13 in the width direction and the electrode lead 14. The joints 15 are formed, for example, by plasma welding.
    Type: Application
    Filed: June 24, 2009
    Publication date: November 11, 2010
    Inventors: Hitoshi Katayama, Takashi Nonoshita, Takeshi Kasamatsu, Shoichi Imashiku, Seiichi Kato, Masanori Sumihara
  • Electrode plate for battery, electrode group for battery, lithium secondary battery, and method for producing electrode plate for battery
    Patent number: 7695864
    Abstract: 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: Grant
    Filed: July 22, 2008
    Date of Patent: April 13, 2010
    Assignee: Panasonic Corporation
    Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu, Seiichi Kato
  • ELECTRODE PLATE FOR BATTERY, ELECTRODE GROUP FOR BATTERY, LITHIUM SECONDARY BATTERY, AND METHOD FOR PRODUCING ELECTRODE PLATE FOR BATTERY
    Publication number: 20100035140
    Abstract: 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: Application
    Filed: July 22, 2008
    Publication date: February 11, 2010
    Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu, Seiichi Kato
  • ELECTRODE PLATE FOR BATTERY, ELECTRODE GROUP FOR BATTERY, LITHIUM SECONDARY BATTERY, METHOD FOR PRODUCING ELECTRODE PLATE FOR BATTERY AND APPARATUS FOR PRODUCING ELECTRODE PLATE FOR BATTERY
    Publication number: 20090325045
    Abstract: 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: Application
    Filed: July 22, 2008
    Publication date: December 31, 2009
    Inventors: Masaharu Miyahisa, Yoshiki Ohsawa, Hideyuki Kumakiri, Tsutomu Nishioka, Shusaku Goto, Takeshi Kasamatsu