Granted Patent
Utility
US 4,972,036 · App. 07/399,572
Thermosetting acrylic copolymers modified with citric esters
Inventors:
Jim D. Elmore, Elizabeth G. Zylla, William J. DeGooyer
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Aug 28, 1989
Inventors
Jim D. Elmore
Elizabeth G. Zylla
William J. DeGooyer
Assignee (at issue)
Hi-Tek Polymers, 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.