Granted Patent
Utility
US 5,250,720 · App. 07/852,023
Intermediates for preparing peptide boronic acid inhibitors of trypsin-like proteases
Inventors:
Charles A. Kettner, Ashokkumar B. Shenvi
Patented Case
View Patent ↗
Granted: Oct 5, 1993
Filed: Mar 9, 1992
Inventors
Charles A. Kettner
Ashokkumar B. Shenvi
Assignee (at issue)
The DuPont Merck Pharmaceutical 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.