Granted Patent
Utility
US 6,288,294 · App. 09/800,315
Purification of HCFC-133A
Inventor:
Michael Sheppard Bolmer
Patented Case
View Patent ↗
Granted: Sep 11, 2001
Filed: Mar 6, 2001
Inventor
Michael Sheppard Bolmer
Assignee (at issue)
ATOFINA Chemicals, Inc.
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.