Patents by Inventor Brij N. Sharma

Brij N. Sharma 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).

  • Color-clear composite coatings having improved intercoat adhesion
    Patent number: 5547757
    Abstract: Curable coating compositions based on polyepoxide-containing polymers and polyacid curing agents are disclosed. The polyepoxide-containing polymers contain one or more pendant groups of carbamate, urea or urethane groups. The coating compositions are useful as clear coats in composite color plus clear coatings where the pendant groups provide for intercoat adhesion.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: August 20, 1996
    Assignee: PPG Industries, Inc.
    Inventors: Shanti Swarup, Brij N. Sharma, B. Keith Johnston
  • Carbamate urea or urethane-functional epoxy acrylic with polyacid
    Patent number: 5384367
    Abstract: A curable composition useful as a clear coat in composite color plus clear coatings contains an epoxy group-containing acrylic copolymer having carbamate, urea or urethane pendant groups and a polyacid curing agent which is a carboxylic acid group-containing oligomer or polymer.
    Type: Grant
    Filed: April 19, 1993
    Date of Patent: January 24, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Shanti Swarup, Brij N. Sharma, B. Keith Johnston
  • Coating composition with sag control agent
    Patent number: 4965317
    Abstract: An improved coating composition comprising (a) a binder; and (b) a polyurea sag control agent characterized in that the polyurea sag control agent is a urea functional free radical addition polymer.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: October 23, 1990
    Assignee: PPG Industries, Inc.
    Inventors: Charles M. Kania, Carl C. Anderson, Brij N. Sharma