Granted Patent
Utility
US 5,448,520 · App. 08/306,612
Semiconductor memory
Inventors:
Katsuhiro Shimohigashi, Hiroo Masuda, Kunihiko Ikuzaki, Hiroshi Kawamoto
Patented Case
View Patent ↗
Granted: Sep 5, 1995
Filed: Sep 15, 1994
Inventors
Katsuhiro Shimohigashi
Hiroo Masuda
Kunihiko Ikuzaki
Hiroshi Kawamoto
Assignee (at issue)
HITACHI, LTD.
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.