Granted Patent
Utility
US 4,687,731 · App. 06/794,642
Method for processing light-sensitive silver halide color photographic material which contains a high speed reactive yellow coupler by processing, after fixings, with a sulfite-containing solution and without substantial washing
Inventors:
Masao Ishikawa, Shigeharu Koboshi, Satoru Kuse
Patented Case
View Patent ↗
Granted: Aug 18, 1987
Filed: Nov 4, 1985
Inventors
Masao Ishikawa
Shigeharu Koboshi
Satoru Kuse
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.