Granted Patent
Utility
US 6,663,728 · App. 09/945,856
Gold-free platinum material dispersion-strengthened by small, finely dispersed particles of base metal oxide
Inventors:
Harald Manhardt, David Francis Lupton, Wulf Kock
Patented Case
View Patent ↗
Granted: Dec 16, 2003
Filed: Sep 4, 2001
Inventors
Harald Manhardt
David Francis Lupton
Wulf Kock
Assignee (at issue)
W.C. Heraeus GmbH & Co. KG
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.