Patents by Inventor Sigeru Oshima

Sigeru Oshima 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).

  • Zoom lens
    Patent number: 4626076
    Abstract: A zoom lens having at least 4 components of which the 1st component counting from the front is of positive refractive power and the 2nd and 3rd components are of negative refractive power, wherein the aforesaid 1st, 2nd and 3rd components are made movable for moving in respective loci, which are different from each other, to effect zooming.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: December 2, 1986
    Assignee: Canon Kabushiki Kaisha
    Inventors: Sigeru Oshima, Sadahiko Tsuji