Granted Patent
Utility
US 5,652,446 · App. 08/530,994
Semiconductor memory device with improved capacitor
Inventor:
Masato Sakao
Patented Case
View Patent ↗
Granted: Jul 29, 1997
Filed: Sep 20, 1995
Inventor
Masato Sakao
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.