Granted Patent
Utility
US 5,281,850 · App. 07/922,774
Semiconductor device multilayer metal layer structure including conductive migration resistant layers
Inventor:
Jun Kanamori
Patented Case
View Patent ↗
Granted: Jan 25, 1994
Filed: Jul 31, 1992
Inventor
Jun Kanamori
Assignee (at issue)
OKI ELECTRIC INDUSTRY CO., LTD.
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.