Granted Patent
Utility
US 5,116,922 · App. 07/770,491
Polymers containing beta-hydroxyalkylamide groups
Inventors:
Padmanabhan Sundararaman, Rudolf Maska, Cynthia L. Verardi
Patented Case
View Patent ↗
Granted: May 26, 1992
Filed: Oct 3, 1991
Inventors
Padmanabhan Sundararaman
Rudolf Maska
Cynthia L. Verardi
Assignee (at issue)
PPG 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.