Granted Patent
Utility
US 5,637,439 · App. 08/551,961
Photographic silver halide photosensitive material and method for developing the same
Inventors:
Satoshi Kaneko, Kenji Hirata, Akira Tanaka, Reinhold Ruger
Patented Case
View Patent ↗
Granted: Jun 10, 1997
Filed: Nov 2, 1995
Inventors
Satoshi Kaneko
Kenji Hirata
Akira Tanaka
Reinhold Ruger
Assignees (at issue)
MITSUBISHI PAPER MILLS LIMITED
E.I. DU PONT DE NEMOURS AND COMPANY
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.