Granted Patent
Utility
US 6,730,749 · App. 09/548,294
Siloxane block copolymers having linked siloxane blocks
Inventors:
Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Apr 12, 2000
Inventors
Georg Burkhart
Rolf-Dieter Langenhagen
Andreas Weier
Assignee (at issue)
GOLDSCHMIDT HOLDING 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.