Patents by Inventor Tzong P. Tzang

Tzong P. Tzang 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).

  • Toilet seat ring automatic raising apparatus as electromagnetically actuated
    Patent number: 5394570
    Abstract: A toilet seat ring automatic raising structure includes a pair of actuating legs with appropriate weight for lifting up the seat ring automatically. The actuating legs have magnetic rods which are attracted to the iron cones in an electromagnetic device so that the seat ring can be securely held in place. The releasing of the magnetic force is used to lift up the seat ring automatically.
    Type: Grant
    Filed: January 7, 1994
    Date of Patent: March 7, 1995
    Inventor: Tzong P. Tzang