Granted Patent
Utility
US 5,859,459 · App. 08/825,803
Semiconductor memory device and method of manufacturing the same
Inventor:
Naoshi Ikeda
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Apr 2, 1997
Inventor
Naoshi Ikeda
Assignee (at issue)
SONY GROUP 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.