Patents by Inventor Tung Chang Chen

Tung Chang 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).

  • System for monitoring the production of items which are initially difficult to physically inspect
    Patent number: 4064534
    Abstract: The present system provides a means to record an image of an item which is extremely difficult to inspect because of its peculiar shape or because the person who is inspecting it cannot come in close proximity thereto, such as red hot glass being measured for form and size immediately upon being formed into a bottle. The present system employs a television camera and logic circuitry to electronically compare the profile of said image against a standard item whereby the item being inspected or measured can either be rejected or accepted.
    Type: Grant
    Filed: April 20, 1976
    Date of Patent: December 20, 1977
    Assignee: Leone International Sales Corporation
    Inventors: Tung Chang Chen, Thomas M. Chen
  • Device for enabling a fixed sensor of an automatic electronic flash unit to respond to bounced light
    Patent number: 3967106
    Abstract: The present device comprises a mirror means rotatably mounted on a flash unit whereby the mirror lies in a partially rotatable marquee posture, protruding from the front side of an automatic electronic flash unit, over the sensor unit. The mirror housing can be rotated in response to the flash unit being rotated so that light which has been bounced from one or more surfaces, before reflecting from the subject to be photographed, is reflected from the mirror surface to the sensor unit for the purpose of controlling the duration of the flash to effect a proper exposure of the film.
    Type: Grant
    Filed: May 15, 1975
    Date of Patent: June 29, 1976
    Inventor: Tung Chang Chen