Patents by Inventor Yeon-Yu Lin

Yeon-Yu Lin 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).

  • Hydraulic buffer hinge
    Patent number: 5383253
    Abstract: A hydraulic buffer hinge for a door comprising a hydraulic buffer mechanism having a piston and a piston rod supported on a spring and received inside a hydraulic oil container to slowing down the return stroke of two swinging plates when the door, onto which the swinging plates are fastened, is closed.
    Type: Grant
    Filed: May 7, 1992
    Date of Patent: January 24, 1995
    Inventor: Yeon-Yu Lin