Granted Patent
Utility
US 5,250,694 · App. 07/935,957
Process for the preparation of 2,3-pyridine-dicarboxylic acids from 3-(2-imidazolin-2-yl)picolinic acids
Inventor:
Paul E. Miller
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Aug 26, 1992
Inventor
Paul E. Miller
Assignee (at issue)
American Cyanamid 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.