Granted Patent
Utility
US 4,812,521 · App. 07/099,253
Epoxy resins modified with N-R-[(oxy or thio)methyl]acrylamide terpolymers
Inventor:
Richard A. Markle
Patented Case
View Patent ↗
Granted: Mar 14, 1989
Filed: Sep 21, 1987
Inventor
Richard A. Markle
Assignee (at issue)
Eagle-Picher 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.