Granted Patent
Utility
US 4,996,378 · App. 07/379,518
Process for production of 1,1-dichloro-1-fluoroethane and/or 1-chloro-1,1-difluoroethane
Inventors:
Danny W. Wright, Barry L. Wagner
Patented Case
View Patent ↗
Granted: Feb 26, 1991
Filed: Jul 13, 1989
Inventors
Danny W. Wright
Barry L. Wagner
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.