Granted Patent
Utility
US 5,952,443 · App. 08/904,596
Acetoacetate functional polysiloxanes
Inventors:
Truman F. Wilt, David N. Walters, Andrew R. Wolff
Patented Case
View Patent ↗
Granted: Sep 14, 1999
Filed: Aug 1, 1997
Inventors
Truman F. Wilt
David N. Walters
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.