Granted Patent
Utility
US 5,574,546 · App. 08/504,314
Developing apparatus for an electrophotographic machine
Inventors:
Takao Kumasaka, Yasuo Takuma, Tatsuo Igawa, Tomio Sugaya, Yasuo Kikuchi
Patented Case
View Patent ↗
Granted: Nov 12, 1996
Filed: Jul 20, 1995
Inventors
Takao Kumasaka
Yasuo Takuma
Tatsuo Igawa
Tomio Sugaya
Yasuo Kikuchi
Assignees (at issue)
HITACHI, LTD.
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.