Patents by Inventor Tasuku Nakazawa

Tasuku Nakazawa 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).

  • Wristwatch
    Patent number: D323996
    Type: Grant
    Filed: March 6, 1989
    Date of Patent: February 18, 1992
    Assignee: Seiko Epson Corporation
    Inventor: Tasuku Nakazawa
  • Watchcase with watchband
    Patent number: D387290
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: December 9, 1997
    Assignee: Seiko Instruments Inc.
    Inventors: Yukiko Hayashi, Yoshinori Nakayama, Tasuku Nakazawa