Patents by Inventor Ping-Fa Heng

Ping-Fa Heng 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).

  • Low smoke screen handler for smoke generators
    Patent number: 5661985
    Abstract: The present invention provides a low smoke screen handler for smoke generators comprising a housing provided therein with a compressor, condensing coils, evaporating coils, and capillaries.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: September 2, 1997
    Inventor: Ping-Fa Heng