Granted Patent
Utility
US 6,545,902 · App. 09/987,590
Ferroelectric memory device
Inventors:
Takeshi Sakata, Tomonori Sekiguchi, Hiroki Fujisawa, Katsutaka Kimura, Masanori Isoda, Kazuhiko Kajigaya
Patented Case
View Patent ↗
Granted: Apr 8, 2003
Filed: Nov 15, 2001
Inventors
Takeshi Sakata
Tomonori Sekiguchi
Hiroki Fujisawa
Katsutaka Kimura
Masanori Isoda
Kazuhiko Kajigaya
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.