Granted Patent
Utility
US 6,049,481 · App. 09/107,462
Multiple-valued mask programmable read only memory semiconductor device with improved word level generator
Inventor:
Kazuyuki Yamasaki
Patented Case
View Patent ↗
Granted: Apr 11, 2000
Filed: Jun 30, 1998
Inventor
Kazuyuki Yamasaki
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.