Granted Patent
Utility
US 6,497,307 · App. 09/471,204
Friction surface coating for a friction material of a brake system
Inventors:
Norbert Schoo, Uwe Schwarz, Hansjorg Grimme, Thomas Pfannebecker
Patented Case
View Patent ↗
Granted: Dec 24, 2002
Filed: Dec 23, 1999
Inventors
Norbert Schoo
Uwe Schwarz
Hansjorg Grimme
Thomas Pfannebecker
Assignee (at issue)
AlliedSignal Bremsbelag 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.