Patents by Inventor Sinzo Ito

Sinzo Ito 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).

  • Curb and drain unit
    Patent number: D242622
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: December 7, 1976
    Assignee: Sanken Steel Co., Ltd.
    Inventor: Sinzo Ito
  • Curb and drain unit
    Patent number: D242623
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: December 7, 1976
    Assignee: Sanken Steel Co., Ltd.
    Inventor: Sinzo Ito
  • Curb and drain unit
    Patent number: D243094
    Type: Grant
    Filed: July 10, 1974
    Date of Patent: January 18, 1977
    Assignee: Sanken Steel Co. Ltd.
    Inventor: Sinzo Ito