Patents by Inventor Sain-Lu Choun

Sain-Lu Choun 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).

  • Two-stage automobile bumper
    Patent number: 4889374
    Abstract: A two-stage automobile bumper comprising two buffers set in two inner supporting frames which are supported in two outer supporting frames welded at the front of the chassis and a bumper fixed at the front end of the buffers. When the bumper receives a shock, pins combining the buffers with said inner supporting frames are to be cut into two pieces and coiled springs are to be compressed to absorb the shock force.
    Type: Grant
    Filed: June 16, 1988
    Date of Patent: December 26, 1989
    Inventor: Sain-Lu Choun