Granted Patent
Utility
US 4,585,326 · App. 06/598,869
Developing electrophotographic image using magnets and magnetic material
Inventors:
Yukio Okamoto, Kiyoshi Kimura, Tadashi Miwa, Noriyoshi Tarumi, Masakazu Fukuchi, Kunio Ito, Hiroshi Fuma
Patented Case
View Patent ↗
Granted: Apr 29, 1986
Filed: Apr 11, 1984
Inventors
Yukio Okamoto
Kiyoshi Kimura
Tadashi Miwa
Noriyoshi Tarumi
Masakazu Fukuchi
Kunio Ito
Hiroshi Fuma
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.