Granted Patent
Utility
US 4,977,102 · App. 07/377,002
Method of producing layer structure of a memory cell for a dynamic random access memory device
Inventor:
Taiji Ema
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Jul 7, 1989
Inventor
Taiji Ema
Assignee (at issue)
Fujitsu Limited
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.