Granted Patent
Utility
US 4,540,766 · App. 06/538,631
Thermosetting high solids solvent-based polyester-urethane one-component coating compositions
Inventors:
Wen-Hsuan Chang, Ronald R. Ambrose, David T. McKeough, Samuel Porter, Jr., Delano R. Eslinger
Patented Case
View Patent ↗
Granted: Sep 10, 1985
Filed: Oct 3, 1983
Inventors
Wen-Hsuan Chang
Ronald R. Ambrose
David T. McKeough
Samuel Porter, Jr.
Delano R. Eslinger
Assignee (at issue)
PPG Industries, Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.