Granted Patent
Utility
US 4,430,486 · App. 06/445,315
Film-forming urethane resins containing alkoxy silane groups and acrylyl groups
Inventors:
Wen-Hsuan Chang, Robert M. Piccirilli, Walter F. Kasper
Patented Case
View Patent ↗
Granted: Feb 7, 1984
Filed: Nov 29, 1982
Inventors
Wen-Hsuan Chang
Robert M. Piccirilli
Walter F. Kasper
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.