Patents by Inventor Etsuroh Ikeyama

Etsuroh Ikeyama 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).

  • Patent number: D320017
    Type: Grant
    Filed: December 7, 1989
    Date of Patent: September 17, 1991
    Assignee: Sony Corporation
    Inventors: Etsuroh Ikeyama, Masayoshi Tsuchiya