Granted Patent
Utility
US 6,213,015 · App. 09/222,820
Printer
Inventors:
Mitsuo Sato, Kenji Endo, Toshiharu Hasegawa, Yoshiharu Kanno
Patented Case
View Patent ↗
Granted: Apr 10, 2001
Filed: Dec 30, 1998
Inventors
Mitsuo Sato
Kenji Endo
Toshiharu Hasegawa
Yoshiharu Kanno
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.