Granted Patent
Utility
US 6,649,539 · App. 09/445,109
Semiconductor contact fabrication method
Inventor:
David Casey
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Jul 9, 2001
Inventor
David Casey
Assignee (at issue)
Zetex PLC
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.