Granted Patent
Utility
US 4,526,975 · App. 06/511,854
2-Amino-4-(4-pyridinyl)benzoic acids
Inventor:
Venkataraman Ramachandran
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: Jul 8, 1983
Inventor
Venkataraman Ramachandran
Assignee (at issue)
Ethyl Corporation
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.