Granted Patent
Utility
US 5,840,621 · App. 08/861,769
Method for manufacturing contact structure capable of avoiding short-circuit
Inventor:
Naoki Kasai
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: May 22, 1997
Inventor
Naoki Kasai
Assignee (at issue)
NEC CORPORATION
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.