Patents by Inventor Kikuji Hirai

Kikuji Hirai 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).

  • Cutter knife
    Patent number: D453896
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: February 26, 2002
    Assignee: NT Incorporated
    Inventor: Kikuji Hirai
  • Retractable blade knife
    Patent number: D354900
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: January 31, 1995
    Assignee: NT Incorporated
    Inventor: Kikuji Hirai