Granted Patent
Utility
US 5,453,503 · App. 08/104,383
Azetidinone intermediates to carbacephalosporins and process
Inventors:
James A. Aikins, John P. Gardner, Billy G. Jackson, John Robert Rizzo, Eddie V. P. Tao
Patented Case
View Patent ↗
Granted: Sep 26, 1995
Filed: Aug 9, 1993
Inventors
James A. Aikins
John P. Gardner
Billy G. Jackson
John Robert Rizzo
Eddie V. P. Tao
Assignee (at issue)
Eli Lilly and Company
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.