Granted Patent
Utility
US 6,835,420 · App. 10/049,606
Coating material and its use for producing highly scratch resistant multilayer transparent lacquers
Inventors:
Ulrike Rockrath, Hubert Baumgart, Andrea Zumbrink, Stefan Silber, Thomas Farwick
Patented Case
View Patent ↗
Granted: Dec 28, 2004
Filed: Feb 14, 2002
Inventors
Ulrike Rockrath
Hubert Baumgart
Andrea Zumbrink
Stefan Silber
Thomas Farwick
Assignee (at issue)
BASF Coatings AC
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.