Patents by Inventor Hirofumi Matsuo, deceased

Hirofumi Matsuo, deceased 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).

  • Focus detecting apparatus for a telescope system
    Patent number: 5877892
    Abstract: An automatic focus detecting telescope which offers easy maintenance and which, when applied to a surveying instrument such as an auto-level, provides easy detachment and attachment of an optical horizontal compensation system. Even if the optical horizontal compensation system is detached, no readjustments are required for the automatic focusing apparatus and the eyepiece optical system.
    Type: Grant
    Filed: April 1, 1997
    Date of Patent: March 2, 1999
    Assignees: Asahi Seimitsu Kabushiki Kaisha, Asahi Kogaku Kogyo Kabushiki Kaisha
    Inventors: Satoru Nakamura, Shinichi Suzuki, Takayuki Sensui, Takayuki Ito, Hirofumi Matsuo, deceased, Tatsuo Gotoh, Yasuo Nakamura