Granted Patent
Utility
US 6,240,270 · App. 09/527,676
Color image forming method and device using potential division development
Inventors:
Teruaki Mitsuya, Hiroyuki Mabuchi, Masayoshi Ishii, Koji Kato, Hisayoshi Kato
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Mar 17, 2000
Inventors
Teruaki Mitsuya
Hiroyuki Mabuchi
Masayoshi Ishii
Koji Kato
Hisayoshi Kato
Assignee (at issue)
Hitachi Koki 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.