Patents by Inventor Ryuhei Ishizaki

Ryuhei Ishizaki 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).

  • Watch band
    Patent number: D354250
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: January 10, 1995
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryuhei Ishizaki
  • Watch band
    Patent number: D361045
    Type: Grant
    Filed: June 23, 1993
    Date of Patent: August 8, 1995
    Assignee: Seikosha Co., Ltd.
    Inventor: Ryuhei Ishizaki