Patents by Inventor Yoshiyuki Itaya

Yoshiyuki Itaya 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).

  • Turbomolecular pump
    Patent number: 4787829
    Abstract: A turbomolecular pump is disclosed which has reduced axial length so as to provide a small-sized pump, and which also has improved stability during high-speed operation, is simple in construction, and is able to operate at much higher speeds than prior art devices.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: November 29, 1988
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Masayuki Miyazaki, Yoshihisa Kitora, Shin Sekiya, Kiyoshi Taketoh, Yoshiyuki Itaya