Granted Patent
Utility
US 5,254,709 · App. 07/935,663
Method for preparing stearically hindered aryl phosphites
Inventor:
Bryon A. Hunter
Patented Case
View Patent ↗
Granted: Oct 19, 1993
Filed: Aug 24, 1992
Inventor
Bryon A. Hunter
Assignee (at issue)
Uniroyal Chemical Company, Inc.
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.