Granted Patent
Utility
US 5,902,913 · App. 08/796,902
Production of hydrofluoroalkanes
Inventors:
Richard Powell, John David Scott, Charles John Shields, David William Bonniface
Patented Case
View Patent ↗
Granted: May 11, 1999
Filed: Feb 6, 1997
Inventors
Richard Powell
John David Scott
Charles John Shields
David William Bonniface
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.