Granted Patent
Utility
US 4,581,179 · App. 06/140,893
Process for the preparation of trifluoromethylbenzoyl chlorides and bromides from trifluoromethylbenzoyl fluorides
Inventors:
David Y. Tang, Byron R. Cotter
Patented Case
View Patent ↗
Granted: Apr 8, 1986
Filed: Apr 16, 1980
Inventors
David Y. Tang
Byron R. Cotter
Assignee (at issue)
Occidental Chemical 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.