Granted Patent
Utility
US 4,435,559 · App. 06/409,273
.beta.-Hydroxy urethane low temperature curing agents
Inventor:
Joseph T. Valko
Patented Case
View Patent ↗
Granted: Mar 6, 1984
Filed: Aug 18, 1982
Inventor
Joseph T. Valko
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.