Granted Patent
Utility
US 5,939,491 · App. 08/904,597
Curable compositions based on functional polysiloxanes
Inventors:
Truman F. Wilt, David N. Walters, James A. Claar, Karen D. Donnelly, Joseph M. Carney, Andrew R. Wolff
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Aug 1, 1997
Inventors
Truman F. Wilt
David N. Walters
James A. Claar
Karen D. Donnelly
Joseph M. Carney
Andrew R. Wolff
Assignee (at issue)
PPG Industries Ohio, 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.