Granted Patent
Utility
US 4,783,495 · App. 07/123,470
(Hydroxyphenyl) silane stabilizers
Inventors:
Stephen D. Pastor, Edward T. Hessell
Patented Case
View Patent ↗
Granted: Nov 8, 1988
Filed: Nov 20, 1987
Inventors
Stephen D. Pastor
Edward T. Hessell
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.