Granted Patent
Utility
US 5,912,331 · App. 07/669,809
Process for the preparation of 9-deoxo-9(Z)-hydroxyiminoerythromycin A
Inventor:
Robert R. Wilkening
Patented Case
View Patent ↗
Granted: Jun 15, 1999
Filed: Mar 15, 1991
Inventor
Robert R. Wilkening
Assignee (at issue)
MERCK & CO., 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.