Granted Patent
Utility
US 5,670,692 · App. 08/703,762
7-substituted quinone methides as inhibitors for unsaturated monomers
Inventors:
Peter Nesvadba, Samuel Evans, Matthew E. Gande, Volker H. von Ahn, Roland A. E. Winter
Patented Case
View Patent ↗
Granted: Sep 23, 1997
Filed: Aug 27, 1996
Inventors
Peter Nesvadba
Samuel Evans
Matthew E. Gande
Volker H. von Ahn
Roland A. E. Winter
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.