Granted Patent
Utility
US 5,091,525 · App. 07/601,021
Monohydrate and DMF solvates of a new carbacephem antibiotic
Inventor:
John Brennan
Patented Case
View Patent ↗
Granted: Feb 25, 1992
Filed: Oct 23, 1990
Inventor
John Brennan
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.