Patents by Inventor Yen-Yao Hsueh

Yen-Yao Hsueh 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).

  • Control valve assembly for a faucet
    Patent number: 7383858
    Abstract: A control valve assembly includes a first control valve and a second control valve longitudinally mounted to the first control valve. A first check valve and a second check valve respectively disposed in the first control valve and the second control valve such that the leakproof effect of the control valve assembly is doubled.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: June 10, 2008
    Inventor: Yen-Yao Hsueh
  • CONTROL VALVE ASSEMBLY FOR A FAUCET
    Publication number: 20080083466
    Abstract: A control valve assembly includes a first control valve and a second control valve longitudinally mounted to the first control valve. A first check valve and a second check valve respectively disposed in the first control valve and the second control valve such that the leakproof effect of the control valve assembly is doubled.
    Type: Application
    Filed: March 14, 2007
    Publication date: April 10, 2008
    Inventor: Yen-Yao Hsueh