Granted Patent
Utility
US 6,253,039 · App. 09/460,518
Color image forming apparatus
Inventors:
Masahiro Nakano, Masahiko Saito, Akira Sasaki, Kazuhiro Wakamatsu
Patented Case
View Patent ↗
Granted: Jun 26, 2001
Filed: Dec 14, 1999
Inventors
Masahiro Nakano
Masahiko Saito
Akira Sasaki
Kazuhiro Wakamatsu
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.