Granted Patent
Utility
US 4,798,775 · App. 07/011,363
Process for producing silver halide photographic emulsion
Inventors:
Toshihiko Yagi, Shinya Shimura
Patented Case
View Patent ↗
Granted: Jan 17, 1989
Filed: Feb 2, 1987
Inventors
Toshihiko Yagi
Shinya Shimura
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.