Granted Patent
Utility
US 6,504,770 · App. 10/067,231
Semiconductor memory
Inventors:
Goro Kitsukawa, Toshitsugu Ueda, Manabu Ishimatsu, Michihiro Mishima
Patented Case
View Patent ↗
Granted: Jan 7, 2003
Filed: Feb 7, 2002
Inventors
Goro Kitsukawa
Toshitsugu Ueda
Manabu Ishimatsu
Michihiro Mishima
Assignees (at issue)
HITACHI, LTD.
Hitachi Ulsi Systems Co., 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.