Patents by Inventor Hajime Shiozawa

Hajime Shiozawa 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).

  • Mounting member for polishing
    Patent number: 5871393
    Abstract: When a mounting member employed for fine polishing of semiconductor substrates or glass substrates etc. is constituted of a combination of a sheet of continuous porous structure and a template, operating efficiency is lowered by the need to change the template; this is a factor raising production costs, and edge portions of the polishing workpiece get damaged by contact with the template, causing production of defective articles. By making the mounting member for polishing a member in which water repellence was conferred on at least a surface skin layer of a continuous sheet of porous structure, fine polishing without a template was made possible.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: February 16, 1999
    Assignee: Chiyoda Co., Ltd.
    Inventor: Hajime Shiozawa
  • Floppy disc drive
    Patent number: D296554
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: July 5, 1988
    Inventors: Hajime Shiozawa, Kazumi Osaka, Ken Kimata
  • Printer interface for computer
    Patent number: D297937
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: October 4, 1988
    Assignee: Sharp Corporation
    Inventors: Hajime Shiozawa, Kazumi Osaka, Ken Kimata
  • Computer
    Patent number: D298624
    Type: Grant
    Filed: April 1, 1986
    Date of Patent: November 22, 1988
    Assignee: Sharp Corporation
    Inventors: Hajime Shiozawa, Kazumi Osaka, Ken Kimata
  • Pocket computer
    Patent number: D299464
    Type: Grant
    Filed: May 23, 1986
    Date of Patent: January 17, 1989
    Assignee: Sharp Kabushiki Kaisha (Sharp Corporation)
    Inventors: Hajime Shiozawa, Kazumi Osaka, Ken Kimata
  • Portable computer
    Patent number: D303523
    Type: Grant
    Filed: November 25, 1987
    Date of Patent: September 19, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hajime Shiozawa, Ken Kimata, Kouki Fukuda, Kuniyasu Matsumoto, Keiichi Koyama
  • Pocket computer
    Patent number: D303955
    Type: Grant
    Filed: November 12, 1986
    Date of Patent: October 10, 1989
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hajime Shiozawa, Keiichi Koyama
  • Portable computer
    Patent number: D309603
    Type: Grant
    Filed: February 28, 1989
    Date of Patent: July 31, 1990
    Assignee: Sharp Corporation
    Inventors: Kanji Mizusugi, Hajime Shiozawa, Kouki Fukuda, Yasuhiko Mano