Patents by Inventor Tadakazu Narikawa

Tadakazu Narikawa 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).

  • Air cleaner
    Patent number: D307936
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: May 15, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukio Hirano, Tadakazu Narikawa, Junichi Yamada
  • Electric vacuum cleaner
    Patent number: D311614
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: October 23, 1990
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Yukio Hirano, Kunio Funatsu, Joseph J. Nukazawa, Tadakazu Narikawa, Junichi Yamada
  • Power head agitator for a vacuum cleaner
    Patent number: D318542
    Type: Grant
    Filed: January 6, 1988
    Date of Patent: July 23, 1991
    Assignee: Matsushita Electric Indust. Co., Ltd.
    Inventors: Kunio Funatsu, Joseph J. Nukazawa, Tadakazu Narikawa, Junichi Yamada
  • Electric vacuum cleaner
    Patent number: D318937
    Type: Grant
    Filed: September 6, 1988
    Date of Patent: August 6, 1991
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Isamu Shinozaki, Joseph J. Nukazawa, Tadakazu Narikawa, Jun-ichi Yamada
  • Television receiver
    Patent number: D350346
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: September 6, 1994
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirofumi Takemasa, Eiichiro Naito, Hiroyuki Maeno, Tadakazu Narikawa, Junichi Yamada
  • Video telephone
    Patent number: D354954
    Type: Grant
    Filed: December 10, 1993
    Date of Patent: January 31, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Eiichiro Naito, Hiroyuki Maeno, Hirofumi Takemasa, Tadakazu Narikawa, Junichi Yamada
  • Monitor for a computer
    Patent number: D356554
    Type: Grant
    Filed: November 24, 1993
    Date of Patent: March 21, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirofumi Takemasa, Hiroyuki Maeno, Eiichiro Naito, Tadakazu Narikawa, Junichi Yamada
  • Video monitor
    Patent number: D356557
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: March 21, 1995
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirofumi Takemasa, Hiroyuki Maeno, Eiichiro Naito, Tadakazu Narikawa, Junichi Yamada