Granted Patent
Utility
US 5,989,762 · App. 08/812,246
Method of producing a semiconductor device
Inventor:
Hajime Takaoka
Patented Case
View Patent ↗
Granted: Nov 23, 1999
Filed: Mar 6, 1997
Inventor
Hajime Takaoka
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.