Granted Patent
Utility
US 4,801,680 · App. 07/139,358
Hydroxyalkylamide powder coating curing system
Inventors:
Denise M. Geary, Paul H. Pettit, Jr., Marvin L. Kaufman, Susan K. Vicha
Patented Case
View Patent ↗
Granted: Jan 31, 1989
Filed: Dec 30, 1987
Inventors
Denise M. Geary
Paul H. Pettit, Jr.
Marvin L. Kaufman
Susan K. Vicha
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.