Patents by Inventor Kazuhiko Yokawa

Kazuhiko Yokawa 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).

  • Camera
    Patent number: 5319411
    Abstract: A single-lens reflex camera comprises a taking lens having a zooming optical system, a finder whose angle of view is determined according to a focal length of the taking lens, and an operation member which is manually operated. In the single-lens reflex camera, the focal length of the taking lens is changed by driving the zooming optical system, and the zooming operation is controlled in response to an operation of the operation member so that the focal length of the taking lens is changed in the wide-angle direction by a predetermined amount. An angle of view corresponding to that which is seen before the focal length is changed is displayed within the finder.
    Type: Grant
    Filed: August 9, 1991
    Date of Patent: June 7, 1994
    Assignee: Minolta Camera Kabushiki Kaisha
    Inventors: Kenji Ishibashi, Yoshihiro Hara, Kazuhiko Yokawa, Akihiko Fujino, Yasuo Maeda, Shigeto Ohmori, Fumiaki Ishito, Hiroshi Ootsuka, Masayuki Miyazawa