Granted Patent
Utility
US 6,649,956 · App. 10/227,799
Semiconductor integrated circuit device and manufacturing method thereof
Inventors:
Makoto Yoshida, Takahiro Kumauchi, Yoshitaka Tadaki, Isamu Asano, Norio Hasegawa, Keizo Kawakita
Patented Case
View Patent ↗
Granted: Nov 18, 2003
Filed: Aug 27, 2002
Inventors
Makoto Yoshida
Takahiro Kumauchi
Yoshitaka Tadaki
Isamu Asano
Norio Hasegawa
Keizo Kawakita
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.