Patents by Inventor Keishi Nishioka

Keishi Nishioka 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).

  • Slide-rotating collar protecting rotatable resin shaft
    Patent number: 6493532
    Abstract: A slide-rotating collar integrally mounted on a resin shaft is configured to have a projected portion at one end of a metallic plate and a recessed portion at the other end thereof such that both ends engageably face each other without aligning in a shaft line direction. The shaft may be used in an electrostatic developing device in an image forming apparatus.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: December 10, 2002
    Assignee: Ricoh Company, Ltd.
    Inventors: Tomotoshi Nakahara, Keishi Nishioka, Toshiyuki Itoh
  • Slide-rotating collar protecting rotatable resin shaft
    Publication number: 20020018671
    Abstract: A slide-rotating collar integrally mounted on a resin shaft is configured to have a projected portion at one end of a metallic plate and a recessed portion at the other end thereof such that both ends engageably face each other without aligning in a shaft line direction. The shaft may be used in an electrostatic developing device in an image forming apparatus.
    Type: Application
    Filed: June 26, 2001
    Publication date: February 14, 2002
    Applicant: Ricoh Company, LTD.
    Inventors: Tomotoshi Nakahara, Keishi Nishioka, Toshiyuki Itoh