Granted Patent
Utility
US 4,808,663 · App. 07/088,731
Method of preparing acrylic polymers containing hydrolyzable moieties from organosilane compounds
Inventors:
Wen-Hsuan Chang, Paul J. Prucnal, John R. Peffer, Edward L. Dufford, Ronald R. Ambrose
Patented Case
View Patent ↗
Granted: Feb 28, 1989
Filed: Aug 24, 1987
Inventors
Wen-Hsuan Chang
Paul J. Prucnal
John R. Peffer
Edward L. Dufford
Ronald R. Ambrose
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.