Granted Patent
Utility
US 4,537,971 · App. 06/536,133
Process for preparing quinolinic acid
Inventors:
Robert W. J. Rebhahn, James E. Kassner, Raymond E. Werner
Patented Case
View Patent ↗
Granted: Aug 27, 1985
Filed: Sep 26, 1983
Inventors
Robert W. J. Rebhahn
James E. Kassner
Raymond E. Werner
Assignee (at issue)
Hilton Davis Chemical Co.
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.