Granted Patent
Utility
US 4,841,332 · App. 07/890,787
Toner control for a developer device
Inventors:
Satoshi Haneda, Hisashi Shoji, Seiichiro Hiratsuka
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Jul 23, 1986
Inventors
Satoshi Haneda
Hisashi Shoji
Seiichiro Hiratsuka
Assignee (at issue)
Konishiroku Photo Industry 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.