Patents by Inventor Izumi Kozu

Izumi Kozu 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).

  • Socket of pipe coupling
    Patent number: D462112
    Type: Grant
    Filed: November 30, 2001
    Date of Patent: August 27, 2002
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Izumi Kozu, Tomoko Someya
  • Plug of pipe coupling
    Patent number: D463537
    Type: Grant
    Filed: December 4, 2001
    Date of Patent: September 24, 2002
    Assignee: Nitto Kohki Co., Ltd.
    Inventors: Izumi Kozu, Tomoko Someya
  • Socket of pipe coupling
    Patent number: D471261
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 4, 2003
    Assignee: Nitto Kohki Co., Ltd.
    Inventor: Izumi Kozu
  • Plug of pipe coupling
    Patent number: D471262
    Type: Grant
    Filed: July 24, 2002
    Date of Patent: March 4, 2003
    Assignee: Nitto Kohki Co., Ltd.
    Inventor: Izumi Kozu