Granted Patent
Utility
US 4,286,053 · App. 06/096,452
Process for forming dye images
Inventors:
Wataru Ishikawa, Ryosuke Satoh, Kiyoshi Yamashita, Tugumoto Usui, Katsunori Kato
Patented Case
View Patent ↗
Granted: Aug 25, 1981
Filed: Nov 21, 1979
Inventors
Wataru Ishikawa
Ryosuke Satoh
Kiyoshi Yamashita
Tugumoto Usui
Katsunori Kato
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.