Granted Patent
Utility
US 6,475,972 · App. 09/505,793
Synthetic detergent formulations
Inventor:
Paul Clignet
Patented Case
View Patent ↗
Granted: Nov 5, 2002
Filed: Feb 17, 2000
Inventor
Paul Clignet
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.