Granted Patent
Utility
US 4,948,479 · App. 07/362,730
Removal of unsaturated carbon compounds from 1,1-dichloro-1-fluoroethane
Inventors:
Wayne E. Brooks, William L. Baggett
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Jun 7, 1989
Inventors
Wayne E. Brooks
William L. Baggett
Assignee (at issue)
Atochem North America, 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.