Granted Patent
Utility
US 4,736,036 · App. 06/521,211
Process for the preparation of quinolinic acid
Inventor:
Ponnampalam Mathiaparanam
Patented Case
View Patent ↗
Granted: Apr 5, 1988
Filed: Aug 8, 1983
Inventor
Ponnampalam Mathiaparanam
Assignee (at issue)
Appleton Papers Inc.
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.