Patents by Inventor Shigeki Yoshikawa

Shigeki Yoshikawa 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).

  • Wrist watch case
    Patent number: D451405
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: December 4, 2001
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Shigeki Yoshikawa, Takayuki Takahashi
  • Wrist watch case
    Patent number: D453298
    Type: Grant
    Filed: February 13, 2001
    Date of Patent: February 5, 2002
    Assignee: Citizen Watch Co. Ltd.
    Inventors: Shigeki Yoshikawa, Takayuki Takahashi
  • Wrist watch
    Patent number: D549598
    Type: Grant
    Filed: July 13, 2006
    Date of Patent: August 28, 2007
    Assignee: Citizen Holdings Co., Ltd.
    Inventor: Shigeki Yoshikawa
  • Liquid crystal time display apparatus
    Patent number: D293424
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: December 29, 1987
    Assignee: Citizen Watch Co., Ltd.
    Inventor: Shigeki Yoshikawa
  • Wrist watch
    Patent number: D423952
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: May 2, 2000
    Assignee: Citizen Watch Co. Ltd.
    Inventors: Tetsuya Inui, Shigeki Yoshikawa, Yuri Kawashima
  • Wrist watch case
    Patent number: D424951
    Type: Grant
    Filed: April 19, 1999
    Date of Patent: May 16, 2000
    Assignee: Citizen Watch Co. Ltd.
    Inventors: Tetsuya Inui, Shigeki Yoshikawa, Yuri Kawashima