Granted Patent
Utility
US 4,755,520 · App. 06/875,311
Spartein compounds, their preparation and use
Inventors:
Uwe Schon, Wolfgang Kehrbach, Bernd Hachmeister, Gerd Buschmann, Ulrich Kuhl
Patented Case
View Patent ↗
Granted: Jul 5, 1988
Filed: Jun 17, 1986
Inventors
Uwe Schon
Wolfgang Kehrbach
Bernd Hachmeister
Gerd Buschmann
Ulrich Kuhl
Assignee (at issue)
Kali-Chemie Pharma GmbH
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.