Patents by Inventor Brian D. D'Anza

Brian D. D'Anza 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).

  • Water based coal tar emulsions
    Patent number: 6979705
    Abstract: Water-based coal tar emulsions are described which are prepared from a blend comprising coal tar, water, acrylonitrile-butadiene copolymer powders and clay. After the emulsion is prepared from the blend, a rubber latex may be added to the emulsion. Films obtained from the emulsions exhibit desirable elongation and tensile properties.
    Type: Grant
    Filed: March 9, 2004
    Date of Patent: December 27, 2005
    Assignee: W.P. Hickman Systems Inc.
    Inventors: Donald L. McDowell, Kenneth J. Brzozowski, Joseph F. Duda, Brian D. D'Anza