Patents by Inventor Steven Paul Hulme

Steven Paul 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).

  • Catalyst blends for producing low thermal desorption polyurethane foams
    Patent number: 6858654
    Abstract: A catalyst composition for catalyzing a polyurethane forming reaction includes a gelling catalyst and a blowing catalyst selected such that the resulting polyurethane foam has a low level of volatile and/or malodorous material in it. The gelling catalysts are selected from tertiary aminoalkyl substituted primary or secondary amines; and the blowing catalysts are selected from bis(aminoalkyl) ethers comprising alkanol moieties, primary amine moieties, or ureido moieties derived from such primary amine moieties.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: February 22, 2005
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Stephan Herman Wendel, Steven Paul Hulme, Mark Leo Listemann, Reza Fard-Aghai, Juan Jesus Burdeniuc