Granted Patent
Utility
US 4,888,100 · App. 07/324,169
Photochemical conversion of cephalosporins, 1-carba(1-dethia)cephalosporins and 1-oxa(1-dethia)cephalosporins
Inventors:
Larry W. Hertel, John Michael Morin, Jr., Robert Theodore Vasileff
Patented Case
View Patent ↗
Granted: Dec 19, 1989
Filed: Mar 15, 1989
Inventors
Larry W. Hertel
John Michael Morin, Jr.
Robert Theodore Vasileff
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.