Granted Patent
Utility
US 5,118,809 · App. 07/538,861
Process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylates from chloromaleate or chlorofumarate or mixtures thereof
Inventors:
Albert A. Cevasco, George Anello Chiarello, William F. Rieker
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Jun 15, 1990
Inventors
Albert A. Cevasco
George Anello Chiarello
William F. Rieker
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.