Patents by Inventor Nobuaki Kitazima

Nobuaki Kitazima 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 illuminating and observing apparatus
    Patent number: 5140458
    Abstract: An optical illuminating and observing apparatus having a first drive system for changing the magnification of the apparatus and a second drive system for changing the illuminating field of the apparatus. The two drive systems can be operated either in an interlocking relationship or independently of each other. In a preferred embodiment, a clutch-gear is used to connect and disconnect the two drive systems to or from each other.
    Type: Grant
    Filed: April 27, 1989
    Date of Patent: August 18, 1992
    Assignee: Kabushiki Kaisha Topcon
    Inventors: Kazutoshi Takagi, Nobuaki Kitazima, Yoshitaka Torii