Patents by Inventor John P. Chua

John P. Chua 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).

  • High efficiency vacuum cleaner bags
    Patent number: 5090975
    Abstract: A novel vacuum cleaner bag is disclosed comprising a closed receptacle having an inlet orifice, the bag being formed from a sheet containing at least 65% flashspun polyolefin fibers. The vacuum cleaner bag is suitable for conventional vacuum cleaners and provides efficient removal of particulate matter, especially soil particles less than 10 microns in size.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: February 25, 1992
    Assignee: The Drackett Company
    Inventors: Luz P. Requejo, John P. Chua