Patents by Inventor Hiromi Otsuru

Hiromi Otsuru 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).

  • White board
    Patent number: 4996110
    Abstract: A white board comprises a front surface layer composed of a polyester film having undergone a hard coat treatment and a rear surface layer composed of a sheet-like magnet. The white board can be easily attached to and detached from steel walls, glass plates, etc. and stored in a rolled state when not in use.
    Type: Grant
    Filed: August 19, 1986
    Date of Patent: February 26, 1991
    Assignee: Bridgestone Corporation
    Inventors: Itsuo Tanuma, Hiromi Otsuru, Toshio Honda