Patents by Inventor William Bruce Kemmler

William Bruce Kemmler 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).

  • Frothed energy absorbing polyurethane materials and process of manufacture
    Publication number: 20030229154
    Abstract: The present invention is directed towards a method of manufacturing frothed polyurethanes from raw materials that may best be described as quasi-prepolymer types where a partial prepolymer is reacted with a polyol. A partial pre-polymer, such as 4-4′-diphenylmethane diisocyanate, may be combined with a 4000 MW propylene-oxide based polyether polyol, such as polypropylene glycol which may be end-capped with a polyethylene glycol, or a 6000 MW propylene-oxide based polyether polyol, such as polypropylene glycol which may be end-capped with a polyethylene glycol, and a catalyst to produce frothed polyurethane material in sheet form having enhanced compressibility and elastic recovery.
    Type: Application
    Filed: June 7, 2002
    Publication date: December 11, 2003
    Inventors: William Bruce Kemmler, John Bruce Appleby