Granted Patent
Utility
US 6,144,052 · App. 09/142,011
Semiconductor device and its manufacture
Inventors:
Keiko Kushida, Masahiko Hiratani, Kazuyoshi Torii, Shinichiro Takatani, Hiroshi Miki, Yuuichi Matsui, Yoshihisa Fujisaki
Patented Case
View Patent ↗
Granted: Nov 7, 2000
Filed: Aug 31, 1998
Inventors
Keiko Kushida
Masahiko Hiratani
Kazuyoshi Torii
Shinichiro Takatani
Hiroshi Miki
Yuuichi Matsui
Yoshihisa Fujisaki
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.