Patents by Inventor Kok Tam

Kok Tam 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).

  • Steam system for continuous cleaning of hood fans
    Publication number: 20070204855
    Abstract: A device and method for cleaning fans in range or stove hoods by spraying steam onto the fan impeller area on which soot and cooking fumes condense to clean the impeller and wash the accumulated condensates down a drain. By using steam above atmospheric pressure as the cleaning fluid, the device uses significantly less water that other devices that spray water or an aqueous solution to clean the fan blades.
    Type: Application
    Filed: May 7, 2007
    Publication date: September 6, 2007
    Inventors: Jason Cheng, Kok Tam