Granted Patent
Utility
US 6,556,229 · App. 09/833,811
Electrophotographic apparatus having a fringe development preventing mechanism
Inventors:
Teruaki Mitsuya, Nobuyoshi Hoshi, Hisao Okada, Yoshihiko Sano, Shinichi Akatsu, Shinya Kobayashi
Patented Case
View Patent ↗
Granted: Apr 29, 2003
Filed: Apr 13, 2001
Inventors
Teruaki Mitsuya
Nobuyoshi Hoshi
Hisao Okada
Yoshihiko Sano
Shinichi Akatsu
Shinya Kobayashi
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.