Patents by Inventor Chao Lin Chen

Chao Lin Chen 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).

  • Photographic camera having additional image
    Patent number: 6246838
    Abstract: A camera includes a casing having an optical device disposed in the front portion and a film disposed in the rear portion. One or more image sheets are detachably securing to the middle portion of the casing and between the film and the optical device by magnetic members. The magnetic members of the casing or the magnetic members of the image sheets are different from each other for checking the image sheets at the correct position. The casing includes a window having an additional image sheet for checking whether the image sheets are at the correct position.
    Type: Grant
    Filed: November 23, 1999
    Date of Patent: June 12, 2001
    Inventor: Chao Lin Chen