Patents by Inventor John Shoden

John Shoden 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).

  • Additive color lamphouse
    Patent number: 5032866
    Abstract: An additive color light source for professional photographic printing is disclosed. The lamphouse has a closed loop light intensity feedback control system for regulating the light sources within the lamphouse.
    Type: Grant
    Filed: March 12, 1990
    Date of Patent: July 16, 1991
    Assignee: Photo Control Corporation
    Inventors: John Shoden, Gary Lakeberg, Charles Yancey