Patents by Inventor Kazue Kato

Kazue Kato 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).

  • Combined tape player and earphone
    Patent number: D314574
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: February 12, 1991
    Assignee: Sony Corporation
    Inventor: Kazue Kato
  • Headphone
    Patent number: D316861
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: May 14, 1991
    Assignee: Sony Corporation
    Inventors: Shingo Yoda, Kazue Kato
  • Earphone
    Patent number: D318864
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: August 6, 1991
    Assignee: Sony Corporation
    Inventors: Takefumi Daido, Kazue Kato
  • Headphone
    Patent number: D323167
    Type: Grant
    Filed: December 7, 1988
    Date of Patent: January 14, 1992
    Assignee: Sony Corporation
    Inventors: Nobutsugu Yamazaki, Kazue Kato
  • Earphone case
    Patent number: D333917
    Type: Grant
    Filed: January 12, 1989
    Date of Patent: March 16, 1993
    Assignee: Sony Corporation
    Inventors: Takefumi Daido, Kazue Kato