Patents by Inventor Henry S. Yuan

Henry S. Yuan 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).

  • Patent number: 5397194
    Abstract: A fountain cleaning device for washing articles as, for example, vehicles, bathtubs or shop fronts the device comprises a reservoir, compressible in the direction perpendicular to a surface to be cleaned, and includes a one-way flow control mechanism, which allows a cleaning solution contained therein to be dispensed under an external compression and seals the liquid upon the release of the pressure. A scrubbing medium is attached to the undersurface of the reservoir.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: March 14, 1995
    Inventors: Henry S. Yuan, Wen R. Yuan