Granted Patent
Utility
US 6,659,847 · App. 10/231,774
Method of cleaning a probe card
Inventors:
Yu-Hsin Liu, Kuang-Ping Tang
Patented Case
View Patent ↗
Granted: Dec 9, 2003
Filed: Aug 28, 2002
Inventors
Yu-Hsin Liu
Kuang-Ping Tang
Assignee (at issue)
POWERCHIP SEMICONDUCTOR CORP.
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.