Patents by Inventor Chun L. Ou

Chun L. Ou 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).

  • Delayed auto-rising toilet seat
    Patent number: 5138724
    Abstract: An apparatus has a housing being attached on a rear portion of a toilet seat which is pivotally mounted to a toilet bowl. The housing has a front portion deposited in front of a pivot axis of the toilet seat and an upper and lower chamber deposited behind the pivot axis. The front portion and the upper and lower chambers communicating with each other to allow liquid to flow therein to delay and actuate a rising movement of the toilet seat.
    Type: Grant
    Filed: March 28, 1991
    Date of Patent: August 18, 1992
    Inventors: Fong N. Chien, Chun L. Ou