Patents by Inventor Fook L. Ng

Fook L. Ng 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).

  • Polyorganosiloxane collectors in the beneficiation of fine coal by froth flotation
    Patent number: 4532032
    Abstract: A froth flotation process for the beneficiation of fine coal is disclosed which employs as a collector a water-dispersible polyorganosiloxane or a mixture of water-dispersible polyorganosiloxanes which contain either aryl radicals or aryl radicals combined with polyethylene oxide and polypropylene oxide radicals. Preferred polyorganosiloxanes are those which contain both aryl radicals and polyethylene oxide and/or polypropylene oxide radicals. The process of this invention is espeically useful for the beneficiation of difficult-to-float fine coals.
    Type: Grant
    Filed: May 30, 1984
    Date of Patent: July 30, 1985
    Assignee: Dow Corning Corporation
    Inventors: Fook L. Ng, Bruce S. Higgs