Granted Patent
Utility
US 4,938,945 · App. 07/259,071
High purity anhydrous FeF.sub.3 and process for its manufacture
Inventors:
Tariq Mahmood, Charles B. Lindahl, Ronald E. Davis
Patented Case
View Patent ↗
Granted: Jul 3, 1990
Filed: Oct 18, 1988
Inventors
Tariq Mahmood
Charles B. Lindahl
Ronald E. Davis
Assignee (at issue)
Pennwalt Corporation
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.