Granted Patent
Utility
US 5,962,889 · App. 08/690,621
Nonvolatile semiconductor memory with a floating gate that has a bottom surface that is smaller than the upper surface
Inventors:
Yoshimitsu Yamauchi, Masanori Yoshimi, Shinichi Sato, Keizo Sakiyama
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jul 31, 1996
Inventors
Yoshimitsu Yamauchi
Masanori Yoshimi
Shinichi Sato
Keizo Sakiyama
Assignee (at issue)
SHARP KABUSHIKI KAISHA
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.