Granted Patent
Utility
US 4,763,409 · App. 06/899,896
Method of manufacturing semiconductor device
Inventors:
Kouichi Takekawa, Manabu Bonkohara
Patented Case
View Patent ↗
Granted: Aug 16, 1988
Filed: Aug 25, 1986
Inventors
Kouichi Takekawa
Manabu Bonkohara
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.