Granted Patent
Utility
US 5,907,172 · App. 08/998,312
Split-gate flash memory cell structure
Inventor:
Yau-Kae Sheu
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Dec 24, 1997
Inventor
Yau-Kae Sheu
Assignee (at issue)
United Semiconductor Corp.
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.