Granted Patent
Utility
US 4,419,407 · App. 06/343,785
Elastomeric coating compositions
Inventors:
Robert M. Piccirilli, Wen-Hsuan Chang, Samuel Porter, Jr., James B. O'Dwyer, Kyu-Wang Lee
Patented Case
View Patent ↗
Granted: Dec 6, 1983
Filed: Jan 29, 1982
Inventors
Robert M. Piccirilli
Wen-Hsuan Chang
Samuel Porter, Jr.
James B. O'Dwyer
Kyu-Wang Lee
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.