Granted Patent
Utility
US 4,533,621 · App. 06/628,837
Photographic element with imadazole dye mordant
Inventors:
Satoru Ikeuchi, Yoshihiro Inaba, Hiroshi Shimazaki, Tatsuhiko Kobayashi
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Jul 9, 1984
Inventors
Satoru Ikeuchi
Yoshihiro Inaba
Hiroshi Shimazaki
Tatsuhiko Kobayashi
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.