Patents by Inventor Courtney Tyvand

Courtney Tyvand 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).

  • Flame resistant polymer composition and method for rendering polymers flame resistant
    Patent number: 6559207
    Abstract: A flame resistant composition comprises (a) a polymer; (b) a synergistic mixture comprising(i) from about 0.6 to about 3 percent of a non-halogenated flame retardant compound; and (ii) at least about 0.06 percent of a compatible additive; wherein said percentages are based on weight percent of (a) plus (b), wherein (a) plus (b) equals 100 percent. A method of rendering a polymer flame resistant comprises compounding said polymer with a synergistic mixture comprising (i) from about 0.6 to about 3 percent of a non-halogenated flame retardant compound; and (ii) at least about 0.06 percent of a compatible additive; wherein the percentages are based on weight percent of polymer plus the synergistic mixture, and wherein polymer plus synergistic mixture equals 100 percent.
    Type: Grant
    Filed: March 14, 2000
    Date of Patent: May 6, 2003
    Assignee: SI Corporation
    Inventors: Larry English, Courtney Tyvand, Kevin Kirkland