Granted Patent
Utility
US 4,654,302 · App. 06/673,952
Process for the preparation of desulfatohirudins
Inventors:
Hans Fritz, Johannes Dodt, Ursula Seemuller, Ernst Fink
Patented Case
View Patent ↗
Granted: Mar 31, 1987
Filed: Nov 21, 1984
Inventors
Hans Fritz
Johannes Dodt
Ursula Seemuller
Ernst Fink
Assignees (at issue)
Ciba-Geigy
Plantorgan-Werk Heinrich G. F. Christensen, KG
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.