Patents by Inventor Robert L. Simeone

Robert L. Simeone 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).

  • Powder coating of epoxy-functional acrylic copolymer and polycarboxylic acid
    Patent number: 5663240
    Abstract: A powder coating composition comprises (a) from 60-90 percent by weight of an epoxy functional copolymer having a Tg of from 25.degree.-70.degree. C. formed by polymerizing from 50-75 percent by weight of a glycidyl functional monomer and from 35-50 percent by weight of a monomer free of glycidyl functionality, and (b) from 10-40 percent by weight of a polycarboxylic acid crosslinking agent, wherein the ratio of epoxy:acid functionality is about 1:0.8 to 1.
    Type: Grant
    Filed: March 14, 1996
    Date of Patent: September 2, 1997
    Assignee: PPG Industries, Inc.
    Inventors: Robert L. Simeone, Robert D. Lippert, James B. O'Dwyer, Charles M. Kania
  • Powder coating composition based on epoxy containing polymers and polyacid curing agents
    Patent number: 5407707
    Abstract: Powder coating compositions based on epoxy functional copolymers and polycarboxylic acid curing agents are disclosed. The compositions have high epoxy content providing for excellent physical and chemical properties. In addition, the compositions are formulated such that they have a relatively low melt viscosity which provides for good flow and excellent coating appearance. The compositions are useful as clear coats.
    Type: Grant
    Filed: November 1, 1993
    Date of Patent: April 18, 1995
    Assignee: PPG Industries, Inc.
    Inventors: Robert L. Simeone, Robert D. Lippert, James B. O'Dwyer, Charles M. Kania