Patents by Inventor Yasayuki Yamashita

Yasayuki Yamashita 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).

  • Cleaning device, process cartridge and image forming apparatus
    Patent number: 7809321
    Abstract: A cleaning brush configured to remove toner from a surface of a member of an image forming apparatus; wherein the cleaning brush includes a plurality of fibers having an inside part formed from a conductive material and a surface part formed by an insulating material.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: October 5, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hidetoshi Yano, Osamu Naruse, Kenji Sugiura, Naomi Sugimoto, Yasayuki Yamashita