Granted Patent
Utility
US 4,637,973 · App. 06/795,652
Image forming process for electrophotography
Inventors:
Kunio Shigeta, Yoko Yamamoto, Jiro Takahashi
Patented Case
View Patent ↗
Granted: Jan 20, 1987
Filed: Nov 6, 1985
Inventors
Kunio Shigeta
Yoko Yamamoto
Jiro Takahashi
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.