Granted Patent
Utility
US 6,819,446 · App. 09/531,522
Image forming system
Inventors:
Mutsuo Ogawa, Matsuo Yomogida, Takamitsu Abe, Hideaki Matsuda
Patented Case
View Patent ↗
Granted: Nov 16, 2004
Filed: Mar 21, 2000
Inventors
Mutsuo Ogawa
Matsuo Yomogida
Takamitsu Abe
Hideaki Matsuda
Assignee (at issue)
Tohoku Ricoh 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.