Granted Patent
Utility
US 6,563,759 · App. 09/871,911
Semiconductor memory device
Inventors:
Hideharu Yahata, Masashi Horiguchi, Hiroki Fujisawa, Tsugio Takahashi, Masayuki Nakamura
Patented Case
View Patent ↗
Granted: May 13, 2003
Filed: Jun 4, 2001
Inventors
Hideharu Yahata
Masashi Horiguchi
Hiroki Fujisawa
Tsugio Takahashi
Masayuki Nakamura
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.