Granted Patent
Utility
US 5,939,746 · App. 08/766,464
Semiconductor memory device and manufacturing method of the same
Inventors:
Kuniaki Koyama, John M. Drynan
Patented Case
View Patent ↗
Granted: Aug 17, 1999
Filed: Dec 12, 1996
Inventors
Kuniaki Koyama
John M. Drynan
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.