Granted Patent
Utility
US 6,828,052 · App. 10/240,109
Surface treated electrically conductive metal element and method of forming same
Inventor:
Xiao Guang Zheng
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Dec 31, 2002
Inventor
Xiao Guang Zheng
Assignee (at issue)
CERAMIC FUEL CELLS LIMITED
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.