Patents by Inventor Hiroshi Oogami

Hiroshi Oogami 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).

  • Photosensitive drum for electrophotography
    Patent number: 6131006
    Abstract: The photosensitive drum for electrophotograpy of the present invention comprises: a tubular photosensitive film; an elastic portion fit within the photosensitive film in contact with an inner surface of the photosensitive film; and a rod inserted into a hole of the elastic portion, an outside diameter of the rod being greater than an inside diameter of the hole so that the rod is tightly fit within the hole and that the elastic portion is elastically expanded and is pressed against the inner surface of the photosensitive film.
    Type: Grant
    Filed: May 17, 1999
    Date of Patent: October 10, 2000
    Assignee: NEC Corporation
    Inventor: Hiroshi Oogami