Granted Patent
Utility
US 4,337,339 · App. 06/090,059
Process for preparation of folic acid derivatives
Inventors:
Peter R. Farina, James A. Grattan
Patented Case
View Patent ↗
Granted: Jun 29, 1982
Filed: Oct 31, 1979
Inventors
Peter R. Farina
James A. Grattan
Assignee (at issue)
Baker Instruments 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.