Patents by Inventor Raymond S. Stewart

Raymond S. Stewart 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 plus clear coating method utilizing addition interpolymers containing alkoxy silane and/or acyloxy silane groups
    Patent number: 4499150
    Abstract: Disclosed is a method for coating a substrate comprising the steps of (a) forming a basecoat by coating the substrate with a pigmented basecoating composition; and (b) thereafter forming a topcoat by coating the basecoat with a clear topcoating composition; wherein at least one of the basecoating composition and topcoating composition contains an addition interpolymer having alkoxysilane and/or acyloxysilane moieties, a peak molecular weight of from about 2,000 to about 20,000, and a calculated glass transition temperature of at least about 25.degree. Celsius.
    Type: Grant
    Filed: March 29, 1983
    Date of Patent: February 12, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Raymond S. Stewart, Marvis E. Hartman, Barbara Gorman, Stephen J. Thomas
  • Color plus clear coating method utilizing addition interpolymers containing alkoxy silane and/or acyloxy silane groups
    Patent number: 4499151
    Abstract: Disclosed is a method for coating a substrate comprising the steps of (a) forming a basecoat by coating the substrate with a pigmented basecoating composition; and (b) thereafter forming a topcoat by coating the basecoat with a clear topcoating composition; wherein at least one of the basecoating composition and topcoating composition contains an addition interpolymer having alkoxysilane and/or acyloxysilane moieties.
    Type: Grant
    Filed: September 6, 1983
    Date of Patent: February 12, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Rostyslaw Dowbenko, Raymond S. Stewart, Marvis E. Hartman, Barbara Gorman, Stephen J. Thomas