Granted Patent
Utility
US 6,414,175 · App. 08/869,556
Innovative siloxane block copolymers with rigid spacers and their use
Inventors:
Georg Burkhart, Rolf-Dieter Langenhagen, Andreas Weier
Patented Case
View Patent ↗
Granted: Jul 2, 2002
Filed: Jun 5, 1997
Inventors
Georg Burkhart
Rolf-Dieter Langenhagen
Andreas Weier
Assignee (at issue)
Th. Goldschmidt. AG
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.