Patents by Inventor Steven P. Hulme

Steven P. Hulme 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).

  • Low odor amine catalysts for polyurethane flexible slabstock foams based on polyester polyols
    Patent number: 5591780
    Abstract: A method for preparing a polyester flexible slabstock polyurethane foam which comprises reacting an organic polyisocyanate and a polyester polyol in the presence of a blowing agent, optionally a cell stabilizer and a catalyst composition consisting essentially of N-methylimidazole or 1,2-dimethylimidazole, or both.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: January 7, 1997
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Krunoslav Muha, Steven P. Hulme, Mark E. Harakal