Patents by Inventor Yukifumi Yoshimoto

Yukifumi Yoshimoto 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).

  • Extracellular recording electrode
    Patent number: 7041492
    Abstract: A multiple electrode includes a plurality of micro-electrodes provided on a substrate, and a wiring portion for providing an electrical signal to the micro-electrodes or extracting an electrical signal from the micro-electrodes. Each micro-electrode has porous conductive material on its surface, and the impedance of the micro-electrode is 50 k? or less. Preferably, the porous conductive material is gold, and formed by the passage of current at a current density of 1.0 to 5.0 A/dm2 for 10 to 360 sec. The multiple electrode may include micro-electrodes provided on a substrate in the form of a matrix, a lead line connected to the micro-electrodes, and an electrical junction connected to an end of the lead line.
    Type: Grant
    Filed: June 20, 2001
    Date of Patent: May 9, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hiroaki Oka, Tetsuo Yukimasa, Ryuta Ogawa, Hirokazu Sugihara, Katsuyuki Tsuji, Yukifumi Yoshimoto
  • Extracellular recording electrode
    Publication number: 20030111343
    Abstract: A multiple electrode includes a plurality of micro-electrodes provided on a substrate, and a wiring portion for providing an electrical signal to the micro-electrodes or extracting an electrical signal from the micro-electrodes. Each micro-electrode has porous conductive material on its surface, and the impedance of the micro-electrode is 50 k&OHgr; or less. Preferably, the porous conductive material is gold, and formed by the passage of current at a current density of 1.0 to 5.0 A/dm2 for 10 to 360 sec. The multiple electrode may include micro-electrodes provided on a substrate in the form of a matrix, a lead line connected to the micro-electrodes, and an electrical junction connected to an end of the lead line.
    Type: Application
    Filed: February 1, 2002
    Publication date: June 19, 2003
    Inventors: Hiroaki Oka, Tetsuo Yukimasa, Ryuta Ogawa, Hirokazu Sugihara, Katsuyuki Tsuji, Yukifumi Yoshimoto