Granted Patent
Utility
US 6,348,516 · App. 09/424,982
Method for producing solution of polymers functionalized by acid groups by microwave radiation
Inventors:
Thomas Soczka-Guth, Helmut Witteler, Gregor Deckers, Georg Frank, Kilian Brehl, Jürgen Lenze, Harald Bönsel, Rüdiger Knauf
Patented Case
View Patent ↗
Granted: Feb 19, 2002
Filed: Jul 6, 2000
Inventors
Thomas Soczka-Guth
Helmut Witteler
Gregor Deckers
Georg Frank
Kilian Brehl
Jürgen Lenze
Harald Bönsel
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.