Patents by Inventor Seiichirou Hoshiyama

Seiichirou Hoshiyama 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).

  • Method for dyeing an optical component
    Patent number: 5560751
    Abstract: A method for dyeing an optical component such as a lens or filter. A coating of dyeing solution is formed on a surface of a lens and the lens is subjected to a nonuniform heating treatment in dependence on the position within the surface to obtain the desired color density gradient of the lens. In accordance with the positions within such surface, a nonuniform integrated heating amount distribution provides the desired color density gradient with excellent reproducibility.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 1, 1996
    Assignee: Nikon Corporation
    Inventor: Seiichirou Hoshiyama