Granted Patent
Utility
US 5,001,211 · App. 07/427,556
Salicylate of 1-isopropyl-2-methyl imidazole as an epoxy resin curative
Inventor:
Harold G. Waddill
Patented Case
View Patent ↗
Granted: Mar 19, 1991
Filed: Oct 26, 1989
Inventor
Harold G. Waddill
Assignee (at issue)
Texaco Chemical 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.