Patents by Inventor Timothy Charles Boyer

Timothy Charles Boyer 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).

  • Aqueous wax dispersions as cell openers in making polyurethane flexible foams
    Patent number: 6080800
    Abstract: A method for preparing a flexible or semi-flexible polyurethane foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opening additive characterized in that the cell opening additive comprises an aqueous dispersion of particles comprising a wax substance and optionally an emulsifier, at least 35% of the particles having a size of 0.2 to 5 microns and a melting point which ranges from 0 to 55.degree. C. below the maximum foam exotherm temperature.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: June 27, 2000
    Assignee: Air Products and Chemicals, Inc.
    Inventors: John Herbert Frey, Allen Robert Arnold, Jr., Timothy Charles Boyer, Kevin Rodney Lassila