Patents by Inventor William G. Burckel, deceased

William G. Burckel, deceased 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).

  • Intimate fiber blend of poly(m-phenylene isophthalamide) and poly(p-phenylene terephthalamide)
    Patent number: 4198494
    Abstract: This invention relates to fiber blends, yarns and fabrics for use in lightweight garments offering protection against brief exposure to extreme thermal fluxes, the fiber blend comprising a component that fuses within 10 seconds upon exposure to a heat flux of 2 cal./cm..sup.2 /sec. and a component that in fabric form exhibits a flame strength of at least 20 mg. per denier for at least 10 seconds during exposure to a heat flux of 2 cal./cm..sup.2 /sec.
    Type: Grant
    Filed: September 30, 1974
    Date of Patent: April 15, 1980
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: William G. Burckel, deceased