Granted Patent
Utility
US 4,751,321 · App. 07/010,494
Production of phosphinites and phosphonites
Inventors:
Jonathan Mann, Gordon Shaw
Patented Case
View Patent ↗
Granted: Jun 14, 1988
Filed: Feb 3, 1987
Inventors
Jonathan Mann
Gordon Shaw
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES LIMITED
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.