Granted Patent
Utility
US 4,400,487 · App. 06/336,155
Textured fluorocarbon coating compositions
Inventors:
Richard L. Stoneberg, Raymond R. Stec
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Dec 31, 1981
Inventors
Richard L. Stoneberg
Raymond R. Stec
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.