Patents by Inventor Shuji Higuchi

Shuji Higuchi 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).

  • Voice coil bobbin, manufacturing method thereof and speaker device
    Patent number: 7848537
    Abstract: A voice coil bobbin is formed by skinpass rolling of pure titanium. A manufacturing method of a voice coil bobbin includes a process which manufactures a rolled pure titanium material, a process which executes skinpass rolling of the rolled material, and a process which forms the rolled material after the skinpass rolling to manufacture the voice coil bobbin. For example, the rolled pure titanium material is manufactured by a standard manufacturing process of a normal rolled material defined by JISH4600, and the cold rolling for the purpose of the strengthening is executed. The cold rolling is executed under a condition of a rolling ratio equal to or larger than 60%. Thereby, it becomes possible to obtain double hardness of JIS No. 1-kind titanium material (TR270C) and tensile strength larger than double of the JIS No. 1-kind titanium material (TR270C) and close to 6-4 titanium.
    Type: Grant
    Filed: August 30, 2006
    Date of Patent: December 7, 2010
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation, Goto Denshi Co., Ltd.
    Inventors: Toshihiro Ishigaki, Yoshihide Goto, Taiki Goto, Shuji Higuchi
  • Voice coil bobbin, manufacturing method thereof and speaker device
    Publication number: 20070053546
    Abstract: A voice coil bobbin is formed by skinpass rolling of pure titanium. A manufacturing method of a voice coil bobbin includes a process which manufactures a rolled pure titanium material, a process which executes skinpass rolling of the rolled material, and a process which forms the rolled material after the skinpass rolling to manufacture the voice coil bobbin. For example, the rolled pure titanium material is manufactured by a standard manufacturing process of a normal rolled material defined by JISH4600, and the cold rolling for the purpose of the strengthening is executed. The cold rolling is executed under a condition of a rolling ratio equal to or larger than 60%. Thereby, it becomes possible to obtain double hardness of JIS No. 1-kind titanium material (TR270C) and tensile strength larger than double of the JIS No. 1-kind titanium material (TR270C) and close to 6-4 titanium.
    Type: Application
    Filed: August 30, 2006
    Publication date: March 8, 2007
    Applicants: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION, GOTO DENSHI CO., LTD.
    Inventors: Toshihiro Ishigaki, Yoshihide Goto, Taiki Goto, Shuji Higuchi
  • Manufacturing line for multi-layered printed circuit boards
    Patent number: 6021833
    Abstract: A manufacturing line including a plurality of processing sections disposed in a series for manufacturing multi-layered printed circuit boards by continuously conveying and processing boards through the plurality of processing sections, in which the plurality of processing sections have at least two specific processing sections for conducting a common type of processes, and the specific processing sections are disposed in a common area.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: February 8, 2000
    Assignee: Fujitsu Limited
    Inventors: Katsumi Uchikawa, Keiji Arai, Kouji Takamachi, Tohru Matsui, Ryo Fujita, Tohru Goto, Shigemitsu Matsumoto, Shuntaro Takizawa, Shuji Higuchi, Takanori Kobayashi, Koichi Takemata
  • Pharmaceutical composition for treatment of dementia
    Patent number: 5916925
    Abstract: A pharmaceutical composition comprising idebenone of the present invention is useful for prevention of the progression of dementia.
    Type: Grant
    Filed: January 30, 1997
    Date of Patent: June 29, 1999
    Assignee: Takeda Chemical Industries, Ltd.
    Inventors: Shuji Higuchi, Akinobu Nagaoka, Giichi Goto, Reinhold Hubner, Dietrich Hadler