Granted Patent
Utility
US 4,326,022 · App. 06/211,893
Photographic material containing a high boiling solvent
Inventors:
Kenji Ito, Katsumi Matsuura, Hiroshi Sugita, Toshihiko Kimura, Hideaki Arai
Patented Case
View Patent ↗
Granted: Apr 20, 1982
Filed: Dec 1, 1980
Inventors
Kenji Ito
Katsumi Matsuura
Hiroshi Sugita
Toshihiko Kimura
Hideaki Arai
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.