Granted Patent
Utility
US 4,238,413 · App. 06/092,166
(3-Trifluoromethyl)-benzoyl cyanide and process for its production
Inventors:
David Y. Tang, Arthur M. Foster
Patented Case
View Patent ↗
Granted: Dec 9, 1980
Filed: Nov 7, 1979
Inventors
David Y. Tang
Arthur M. Foster
Assignee (at issue)
Hooker Chemicals & Plastics 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.