Patents by Inventor Masao Yamanobe

Masao Yamanobe 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).

  • Optical modulation device
    Patent number: 4850681
    Abstract: An optical modulation device for effecting optical modulation by controlling the diffraction phenomenon of light, which not only consumes a small amouhnt of the driving energy employed, such as a electric power, but which is also capable of improvements in reliability.
    Type: Grant
    Filed: April 3, 1987
    Date of Patent: July 25, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masao Yamanobe, Yasuyuki Watanabe, Hajime Sakata, Yukitoshi Ohkubo, Tomoyuki Umezawa, Chiori Mochizuki, Kazuya Ishiwata, Takayuki Ishii, Akihiko Nagano, Etsuro Kishi, Ryoji Fujiwara