Granted Patent
Utility
US 4,402,755 · App. 06/414,916
Gelatin hardening method and agents therefor
Inventors:
Morio Kobayashi, Takashi Sasaki
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Sep 3, 1982
Inventors
Morio Kobayashi
Takashi Sasaki
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.