Patents by Inventor Hideyuki Osako

Hideyuki Osako 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).

  • Retractable platen for document reading devices
    Patent number: 5225917
    Abstract: A document reading device for sheet-through type image forming equipment. The device has a document laying member located in a reading position and implemented as a glass platen. The glass platen is protected from damage when a document pressing member in the form of a back-up roller is inadvertently let fall or hits against the glass platen.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: July 6, 1993
    Assignee: Ricoh Company, Ltd.
    Inventor: Hideyuki Osako