Granted Patent
Utility
US 6,689,642 · App. 09/814,942
Semiconductor device and manufacturing method thereof
Inventor:
Hirokazu Fukuda
Patented Case
View Patent ↗
Granted: Feb 10, 2004
Filed: Mar 23, 2001
Inventor
Hirokazu Fukuda
Assignee (at issue)
SANYO ELECTRIC 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.