Patents by Inventor Liang Chau

Liang Chau 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).

  • Oil changing system
    Patent number: 5960907
    Abstract: The system of this invention performs two functions. First draining the dirty oil from the drain plug of the oil pan of the motor vehicle and then using the same device for filling the motor vehicle engine with clean oil. It also comprises a plurality of components. Essentially it comprises a novel oil draining and filling funnel which includes an upper conical tapered fluid receiving member with an opening at the bottom and a long lower central spout.
    Type: Grant
    Filed: September 18, 1997
    Date of Patent: October 5, 1999
    Inventor: Liang Chau