Granted Patent
Utility
US 4,304,889 · App. 06/167,512
Solvent resistant epoxy coatings
Inventors:
Harold G. Waddill, Heinz Schulze
Patented Case
View Patent ↗
Granted: Dec 8, 1981
Filed: Jul 11, 1980
Inventors
Harold G. Waddill
Heinz Schulze
Assignee (at issue)
Texaco 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.