Patents by Inventor Ching Y. Su

Ching Y. Su 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).

  • Escape slideway
    Patent number: 5135076
    Abstract: An escape slideway comprises a base stand, a swivel table, slidway faces, handrails, connecting plates, an oil hydraulic motor, a wiring wheel, wire ropes, etc.. By loosing or winding wire ropes, the slideway can be exended or folded. The escape slideway can be extended to the top of next tall building, a safe place, or earth for persons 10 escaping in an emergency.
    Type: Grant
    Filed: March 26, 1991
    Date of Patent: August 4, 1992
    Inventor: Ching Y. Su