Granted Patent
Utility
US 6,723,774 · App. 10/221,080
Method for producing caoutchouc particles
Inventors:
Norbert Güntherberg, Bernhard Czauderna, Michael Breulmann, Sabine Oepen, Wil Duijzings, Norbert Niessner
Patented Case
View Patent ↗
Granted: Apr 20, 2004
Filed: Sep 10, 2002
Inventors
Norbert Güntherberg
Bernhard Czauderna
Michael Breulmann
Sabine Oepen
Wil Duijzings
Norbert Niessner
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.