Granted Patent
Utility
US 4,235,807 · App. 06/054,208
Synthesis of 2,6-disubstituted benzonitriles
Inventor:
Donald W. Fuhlhage
Patented Case
View Patent ↗
Granted: Nov 25, 1980
Filed: Jul 2, 1979
Inventor
Donald W. Fuhlhage
Assignee (at issue)
Thompson-Hayward 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.