Granted Patent
Utility
US 5,075,481 · App. 07/572,729
Poly-1,3,2-oxazaphospholidine stabilizers
Inventors:
Peter Hofmann, Paul A. Odorisio, Glen T. Cunkle, Don Sabrsula
Patented Case
View Patent ↗
Granted: Dec 24, 1991
Filed: Aug 23, 1990
Inventors
Peter Hofmann
Paul A. Odorisio
Glen T. Cunkle
Don Sabrsula
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.