Granted Patent
Utility
US 5,331,170 · App. 07/858,572
Static type random access memory device with stacked memory cell free from parasitic diode
Inventor:
Fumihiko Hayashi
Patented Case
View Patent ↗
Granted: Jul 19, 1994
Filed: Mar 27, 1992
Inventor
Fumihiko Hayashi
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.