Patents by Inventor Mao Z. Liao

Mao Z. Liao 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).

  • Aluminum frame window with ventilating means
    Patent number: 5279086
    Abstract: An aluminum frame window includes an outer frame assembly peripherally attached with a water-proof strip assembly, an inner frame assembly fastened to the outer frame assembly on the inside to hold a top-hinged outswinging windowpane and peripherally attached with a water-proof strip assembly, wherein air vents and air fan are made on the top on the inside between the outer frame assembly and the inner frame assembly on the outer frame assembly for ventilation.
    Type: Grant
    Filed: July 22, 1992
    Date of Patent: January 18, 1994
    Inventor: Mao Z. Liao