Granted Patent
Utility
US 4,703,073 · App. 06/908,930
Alkylated N,N-dibenzylhydroxylamines and polyolefin compositions stabilized therewith
Inventors:
Roland A. E. Winter, Ramanathan Ravichandran, Raymond Seltzer
Patented Case
View Patent ↗
Granted: Oct 27, 1987
Filed: Sep 15, 1986
Inventors
Roland A. E. Winter
Ramanathan Ravichandran
Raymond Seltzer
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.