Granted Patent
Utility
US 6,399,720 · App. 09/600,366
Method for avoiding instabilities during gas phase polymerization of rubber
Inventors:
Michael Dauben, Wolfgang Nentwig, Jürgen Schneider
Patented Case
View Patent ↗
Granted: Jun 4, 2002
Filed: Jul 14, 2000
Inventors
Michael Dauben
Wolfgang Nentwig
Jürgen Schneider
Assignee (at issue)
Bayer Aktiengesellschaft
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.