Granted Patent
Utility
US 6,249,017 · App. 09/157,537
Highly reliable trench capacitor type memory cell
Inventor:
Mitsuhiro Togo
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Sep 21, 1998
Inventor
Mitsuhiro Togo
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.