Granted Patent
Utility
US 5,288,866 · App. 07/960,749
5,6-disubstituted-3-pyridylmethyl ammonium halide compounds useful for the preparation of 5- (substituted methyl)-2,3-pyridinedicarboxylic acids
Inventor:
Henry L. Strong
Patented Case
View Patent ↗
Granted: Feb 22, 1994
Filed: Oct 14, 1992
Inventor
Henry L. Strong
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.