Granted Patent
Utility
US 6,480,425 · App. 09/820,972
Semiconductor device
Inventors:
Kazumasa Yanagisawa, Toshio Sasaki, Satoru Nakanishi, Yoshihiko Yasu
Patented Case
View Patent ↗
Granted: Nov 12, 2002
Filed: Mar 30, 2001
Inventors
Kazumasa Yanagisawa
Toshio Sasaki
Satoru Nakanishi
Yoshihiko Yasu
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.