Patents by Inventor Charles J. Hsiung

Charles J. Hsiung 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).

  • Dual mode camera
    Patent number: 5049910
    Abstract: Photographic cameras having a plurality of film holders, each carrying a respective type of film, exposable through a common lens and shutter system and having control means for selectively exposing the film carried by the respective film holders either simultaneously or individually, as desired.
    Type: Grant
    Filed: July 5, 1990
    Date of Patent: September 17, 1991
    Inventor: Charles J. Hsiung
  • Convertible film cartridge and toy device
    Patent number: 4992814
    Abstract: An improved film cartridge construction comprised of several basic components (12, 14, 16 and 18) which are releasably connected to form a film cartridge 10, 88 or 90) and which can be recombined to form a wide variety of toys (114 and 126) and other articles 96 and 104).
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: February 12, 1991
    Inventor: Charles J. Hsiung
  • Adjustable film cartridge
    Patent number: 4887111
    Abstract: Improved film cartridges comprising a film supply housing and a film storage housing, and means adjustably connecting said housings to accommodate a variety of film sizes and which are connected by adjustable spacing means that are selectably positionable to a plurality of positions to permit several previously unimagined uses of 35 millimeter film.
    Type: Grant
    Filed: September 22, 1988
    Date of Patent: December 12, 1989
    Inventor: Charles J. Hsiung