Granted Patent
Utility
US 5,091,439 · App. 07/249,608
Process for curing polyurethane coatings and compositions
Inventors:
Godwin Berner, Manfred Rembold, Franciszek Sitek, Werner Rutsch
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Nov 18, 1988
Inventors
Godwin Berner
Manfred Rembold
Franciszek Sitek
Werner Rutsch
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.