Patents by Inventor Kosaburo Nakagawa

Kosaburo Nakagawa 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).

  • Jewelry chain
    Patent number: D299814
    Type: Grant
    Filed: August 12, 1985
    Date of Patent: February 14, 1989
    Assignee: Nakagawa Corporation
    Inventor: Kosaburo Nakagawa
  • Jewelry chain
    Patent number: D333107
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: February 9, 1993
    Assignee: Nakagawa Corporation
    Inventor: Kosaburo Nakagawa