Granted Patent
Utility
US 5,504,263 · App. 08/442,295
Production of hydrofluorocarbons
Inventors:
Leslie Burgess, Jane Lesley Butcher, Thomas Anthony Ryan, Peter Paul Clayton
Patented Case
View Patent ↗
Granted: Apr 2, 1996
Filed: May 16, 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.