Patents by Inventor Down W. Yen

Down W. Yen 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).

  • Clip resiliant
    Patent number: 4696081
    Abstract: A clip comprising: a metal sheet which forms an upper face, a lower face and a back portion; two pairs of hinges with one pair on each face; two pairs of shanks with each shank having a longer arm and a shorter arm, the ends of the arms are bent so that they are rotatably retained by corresponding pairs of hinges. The hinges are set diagonally on the upper and lower faces so that the shanks can be flipped to a position 90 degrees from its original (upright) position and vice-versa.
    Type: Grant
    Filed: January 6, 1987
    Date of Patent: September 29, 1987
    Inventor: Down W. Yen