Granted Patent
Utility
US 6,770,539 · App. 10/421,829
Vertical type MOSFET and manufacturing method thereof
Inventor:
Wataru Sumida
Patented Case
View Patent ↗
Granted: Aug 3, 2004
Filed: Apr 24, 2003
Inventor
Wataru Sumida
Assignee (at issue)
NEC Electronics 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.