Granted Patent
Utility
US 5,840,613 · App. 08/873,357
Fabrication method for semiconductor device
Inventor:
Fumihiko Sato
Patented Case
View Patent ↗
Granted: Nov 24, 1998
Filed: Jun 12, 1997
Inventor
Fumihiko Sato
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.