Patents by Inventor Robert J. Sikora

Robert J. Sikora 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).

  • Cathodic electrodeposition coatings containing zinc hydroxyphosphite pigment
    Patent number: 5382607
    Abstract: An improved aqueous electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of zinc hydroxyphosphite pigment as a corrosion inhibitive pigment and an as a curing catalyst which provides an excellent cure under overbake and underbake conditions and forms a coating with excellent chip resistance and the throwing power of the electrocoating composition is significantly improved.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: January 17, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Robert J. Sikora, Allisa Gam, Ding Y. Chung
  • Cathodic electrodeposition coatings having improved throwing power
    Patent number: 5281316
    Abstract: An improved aqueous electrocoating composition having a binder of an epoxy-amine adduct and a blocked polyisocyanate crosslinking agent; wherein the improvement is the use of an effective amount of a blend of a zinc containing compound and a lead pigment to form an electrocoating composition that has significantly improved throwing power and provides a coating that has the necessary properties such as chip, solvent and corrosion resistance.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: January 25, 1994
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Ding Y. Chung, Robert J. Sikora, John J. Vincent