Patents by Inventor Barry V. Evangelist

Barry V. Evangelist 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).

  • Urethane adhesive-laminated carpeting
    Patent number: 6299715
    Abstract: Laminated carpeting consisting of a secondary backing adhered to a greige good of yarn tufted into a primary backing are prepared from polyurethane adhesives by single puddle processes which allow for lowered use of polyurethane while producing carpets exhibiting excellent delamination strength. Preferably, a reactive polyurethane system is employed as a primary adhesive, and the secondary backing is skip-coated with a minor amount of a non-advancing skip coat.
    Type: Grant
    Filed: July 14, 1998
    Date of Patent: October 9, 2001
    Assignee: Bayer Antwerp N.V.
    Inventors: Leah J. Langsdorf, Jeffrey L. Robbins, Ulrich B. Holeschovsky, Harry Stefanou, Barry V. Evangelist, Robert D. Duffy, Gary L. Allen
  • Dental cavity varnish composition
    Patent number: 4308062
    Abstract: Dental cavity varnish compositions comprising a solution of nitrocellulose and toluene sulfonamide which wet and precisely conform to each "peak" and "valley" of the extensive microundercuts generated during cavity preparation. The varnish compositions are compatible with composite resin restorative materials.
    Type: Grant
    Filed: April 14, 1980
    Date of Patent: December 29, 1981
    Assignee: Pennwalt Corporation
    Inventors: Peter P. L. Cheung, Barry V. Evangelist