Granted Patent
Utility
US 5,391,921 · App. 08/083,322
Semiconductor device having multi-level wiring
Inventors:
Osamu Kudoh, Kenji Okada, Hiroshi Shiba, Takuya Katoh
Patented Case
View Patent ↗
Granted: Feb 21, 1995
Filed: Jun 29, 1993
Inventors
Osamu Kudoh
Kenji Okada
Hiroshi Shiba
Takuya Katoh
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.