Granted Patent
Utility
US 4,425,418 · App. 06/377,585
Liquid developers for electrophotography and developing method using the same
Inventors:
Akio Iwaki, Toyoki Nishijima, Akio Iijima, Tatsuya Sasazawa
Patented Case
View Patent ↗
Granted: Jan 10, 1984
Filed: May 12, 1982
Inventors
Akio Iwaki
Toyoki Nishijima
Akio Iijima
Tatsuya Sasazawa
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.