Granted Patent
Utility
US 6,632,847 · App. 09/831,338
Polymer composition, membrane containing said composition, method for the production and uses thereof
Inventors:
Thomas Soczka-Guth, Georg Frank, Jochen Baurmeister, Jürgen Pawlik, Rüdiger Knauf
Patented Case
View Patent ↗
Granted: Oct 14, 2003
Filed: Oct 22, 2001
Inventors
Thomas Soczka-Guth
Georg Frank
Jochen Baurmeister
Jürgen Pawlik
Rüdiger Knauf
Assignee (at issue)
Celanese Ventures 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.