Granted Patent
Utility
US 5,763,704 · App. 08/522,241
Production of difluoromethane
Inventors:
John David Scott, Michael John Watson, David William Bonniface
Patented Case
View Patent ↗
Granted: Jun 9, 1998
Filed: Sep 6, 1995
Inventors
John David Scott
Michael John Watson
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.