Granted Patent
Utility
US 6,489,680 · App. 09/970,668
Semiconductor device
Inventors:
Iwamichi Kohjiro, Yasuhiro Nunogawa, Sakae Kikuchi, Shizuo Kondo, Tetsuaki Adachi, Osamu Kagaya, Kenji Sekine, Eiichi Hase, Kiichi Yamashita
Patented Case
View Patent ↗
Granted: Dec 3, 2002
Filed: Oct 5, 2001
Inventors
Iwamichi Kohjiro
Yasuhiro Nunogawa
Sakae Kikuchi
Shizuo Kondo
Tetsuaki Adachi
Osamu Kagaya
Kenji Sekine
Eiichi Hase
Kiichi Yamashita
Assignees (at issue)
HITACHI, LTD.
Hitachi Tohbu Semiconductor, 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.