Granted Patent
Utility
US 5,567,341 · App. 08/381,852
Ammonium organo-phosphorus acid salts
Inventor:
Bernard Tury
Patented Case
View Patent ↗
Granted: Oct 22, 1996
Filed: Apr 18, 1995
Inventor
Bernard Tury
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.