Granted Patent
Utility
US 4,246,148 · App. 06/070,194
Two component aqueous coating composition based on an epoxy-polyamine adduct and a polyepoxide
Inventors:
David A. Shimp, Darrell D. Hicks, Richard B. Graver
Patented Case
View Patent ↗
Granted: Jan 20, 1981
Filed: Aug 27, 1979
Inventors
David A. Shimp
Darrell D. Hicks
Richard B. Graver
Assignee (at issue)
Celanese GmbH
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.