Granted Patent
Utility
US 5,696,308 · App. 08/565,715
Production of hydrofluorocarbons
Inventors:
Leslie Burgess, Jane Lesley Butcher, Thomas Anthony Ryan, Peter Paul Clayton
Patented Case
View Patent ↗
Granted: Dec 9, 1997
Filed: Nov 30, 1995
Inventors
Leslie Burgess
Jane Lesley Butcher
Thomas Anthony Ryan
Peter Paul Clayton
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.