Granted Patent
Utility
US 6,183,661 · App. 08/589,305
Composition comprising a hydrofluoroalkane or hydrochlorofluoroalkane and a polyether lubricant
Inventors:
Pamela Louise Makin, Richard Powell
Patented Case
View Patent ↗
Granted: Feb 6, 2001
Filed: Jan 22, 1996
Inventors
Pamela Louise Makin
Richard Powell
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.