Granted Patent
Utility
US 5,663,141 · App. 07/859,453
Hirudin/polyalkylene glycol conjugates and hirudin muteins
Inventors:
Manfred Kurfuerst, Klaus Ruebsamen, Bernhard Schmied, Wolfgang Koerwer, Juergen Schweden, Hans Wolfgang Hoeffken
Patented Case
View Patent ↗
Granted: Sep 2, 1997
Filed: May 29, 1992
Inventors
Manfred Kurfuerst
Klaus Ruebsamen
Bernhard Schmied
Wolfgang Koerwer
Juergen Schweden
Hans Wolfgang Hoeffken
Assignee (at issue)
BASF SE
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.