Granted Patent
Utility
US 5,272,227 · App. 07/747,594
Adducts of hydroxyl group containing epoxy resins and isocyanates and use thereof
Inventor:
Kurt Munk
Patented Case
View Patent ↗
Granted: Dec 21, 1993
Filed: Aug 20, 1991
Inventor
Kurt Munk
Assignee (at issue)
Ciba-Geigy
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.