Granted Patent
Utility
US 4,797,335 · App. 07/096,818
Developing method for electrostatic images using composite component developer under non-contacting conditions
Inventors:
Seiichiro Hiratsuka, Satoshi Haneda, Hisashi Shoji
Patented Case
View Patent ↗
Granted: Jan 10, 1989
Filed: Sep 10, 1987
Inventors
Seiichiro Hiratsuka
Satoshi Haneda
Hisashi Shoji
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.