Granted Patent
Utility
US 6,280,975 · App. 09/155,941
IL-6 mutein and DNA encoding thereto
Inventors:
Marc Ehlers, Stefan Rose-John, Joachim Grötzinger
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Apr 6, 1999
Inventors
Marc Ehlers
Stefan Rose-John
Joachim Grötzinger
Assignee (at issue)
APPLIED RESEARCH SYSTEMS ARS HOLDING N.V.
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.