Granted Patent
Utility
US 6,731,291 · App. 10/054,862
Image processing device and system using the same
Inventors:
Yasuhiro Nakatsuka, Keisuke Nakashima, Shigeru Matsuo, Masahisa Narita, Koyo Katsura, Hidehito Takewa, Tomoaki Aoki
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Jan 25, 2002
Inventors
Yasuhiro Nakatsuka
Keisuke Nakashima
Shigeru Matsuo
Masahisa Narita
Koyo Katsura
Hidehito Takewa
Tomoaki Aoki
Assignees (at issue)
HITACHI, LTD.
Hitachi Engineering 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.