Patents by Inventor Tzyy Z. Shih

Tzyy Z. Shih 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).

  • Patent number: 4712645
    Abstract: A fire escape device suitable for receiving a person or persons to be safely descended from a relatively high elevation to the ground. The device includes a substantially box-like housing which contains a drum with a supporting cable and gear system. A basket is suspended at the base of the housing whereby a person or persons is/are lowered.
    Type: Grant
    Filed: December 29, 1986
    Date of Patent: December 15, 1987
    Inventor: Tzyy Z. Shih