Granted Patent
Utility
US 4,533,627 · App. 06/515,311
Process for the preparation of a silver halide emulsion
Inventors:
Andrew W. Yates, Brian D. Harradine, Michael A. Wraith
Patented Case
View Patent ↗
Granted: Aug 6, 1985
Filed: Jul 18, 1983
Inventors
Andrew W. Yates
Brian D. Harradine
Michael A. Wraith
Assignee (at issue)
Ciba-Geigy
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.