Granted Patent
Utility
US 5,756,868 · App. 08/545,483
Production of hydrofluorocarbons
Inventors:
Leslie Burgess, Thomas Anthony Ryan, Richard Powell
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Oct 19, 1995
Inventors
Leslie Burgess
Thomas Anthony Ryan
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.