Granted Patent
Utility
US 5,545,840 · App. 08/489,277
Developing device in electrophotographic apparatus including developing poll configuration while stably carries developer
Inventors:
Koji Doi, Yasuyuki Tsuji, Shuuho Yokokawa, Kunitomo Takahashi, Youji Hirose, Hiroshi Ueno, Youichi Takeuchi, Koutara Yamada, Hidenori Iwanaga
Patented Case
View Patent ↗
Granted: Aug 13, 1996
Filed: Jun 9, 1995
Inventors
Koji Doi
Yasuyuki Tsuji
Shuuho Yokokawa
Kunitomo Takahashi
Youji Hirose
Hiroshi Ueno
Youichi Takeuchi
Koutara Yamada
Hidenori Iwanaga
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.