Granted Patent
Utility
US 4,341,721 · App. 06/193,220
Diphosphites
Inventor:
Wadim Batorewicz
Patented Case
View Patent ↗
Granted: Jul 27, 1982
Filed: Oct 1, 1980
Inventor
Wadim Batorewicz
Assignee (at issue)
Uniroyal Ltd.
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.