Granted Patent
Utility
US 5,017,732 · App. 07/480,744
Process for preparing chlorofluorocarbons via an in situ generated activated aluminum trihalide catalyst and products resulting therefrom
Inventor:
Robert C. Zawalski
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Feb 16, 1990
Inventor
Robert C. Zawalski
Assignee (at issue)
Dixie Chemical Company
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.