Patents by Inventor Kazumi Izumitani

Kazumi Izumitani 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).

  • Patent number: 8486566
    Abstract: A positive electrode for a lithium-ion secondary battery includes a positive-electrode mixture layer, which includes a positive-electrode active material containing lithium composite oxide, a conductive material, and a binder, and a current collector. The positive-electrode mixture layer contains a compound including sulfur and/or phosphorous, a first polymer serving as a main binder, and a second polymer different from the first polymer.
    Type: Grant
    Filed: November 3, 2008
    Date of Patent: July 16, 2013
    Assignee: Sony Corporation
    Inventors: Masanori Soma, Kenichi Kawase, Masayuki Ihara, Atsumichi Kawashima, Kazumi Izumitani
  • Publication number: 20090123839
    Abstract: A positive electrode for a lithium-ion secondary battery includes a positive-electrode mixture layer, which includes a positive-electrode active material containing lithium composite oxide, a conductive material, and a binder, and a current collector. The positive-electrode mixture layer contains a compound including sulfur and/or phosphorous, a first polymer serving as a main binder, and a second polymer different from the first polymer.
    Type: Application
    Filed: November 3, 2008
    Publication date: May 14, 2009
    Applicant: SONY CORPORATION
    Inventors: Masanori Soma, Kenichi Kawase, Masayuki Ihara, Atsumichi Kawashima, Kazumi Izumitani
  • Patent number: 7137563
    Abstract: A method for making a combination IC card comprising the steps of forming antenna leads and patterned connection leads, forming a hole for mounting an external electrode chip on a sheath on at least one side of the antenna substrate, mounting an IC chip on the antenna substrate having the antenna leads and the patterned connection leads, mounting the external electrode chip on the antenna substrate having the antenna leads and the patterned connection leads, and attaching the sheath having the hole on the antenna substrate.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: November 21, 2006
    Assignee: Sony Corporation
    Inventors: Goro Shibamoto, Osamu Ishii, Kazumi Izumitani, Koji Hayasaka
  • Publication number: 20040245347
    Abstract: A method for making a combination IC card comprising the steps of forming antenna leads and patterned connection leads, forming a hole for mounting an external electrode chip on a sheath on at least one side of the antenna substrate, mounting an IC chip on the antenna substrate having the antenna leads and the patterned connection leads, mounting the external electrode chip on the antenna substrate having the antenna leads and the patterned connection leads, and attaching the sheath having the hole on the antenna substrate.
    Type: Application
    Filed: March 30, 2004
    Publication date: December 9, 2004
    Applicant: Sony Corporation
    Inventors: Goro Shibamoto, Osamu Ishii, Kazumi Izumitani, Koji Hayasaka
  • Patent number: 6459588
    Abstract: A noncontact IC card is provided with a card substrate 11, an IC chip 12 disposed on the card substrate 11, and a antenna circuit 13 formed on the card substrate 11 and having a pair of antenna terminals 13a and 13b, where one antenna terminal 13a is connected to the IC chip 12. An isolation layer 14 is formed over at least one portion of the antenna circuit 13, and a connection layer 15 is formed extending over the isolation layer 14. One end portion 15a of the connection layer 15 is connected to the IC chip 12 and another end portion 15b thereof is connected to the other antenna terminal 13b of the antenna circuit 13. Protective layers 16a and 16b are provided on top of the card substrate 11 to protect the IC chip 12 and the antenna circuit 13.
    Type: Grant
    Filed: March 7, 2000
    Date of Patent: October 1, 2002
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Ken-ichi Morizumi, Kazumi Izumitani