Granted Patent
Utility
US 5,470,699 · App. 08/272,097
Hardening of gelatin-containing layers
Inventors:
Anthony L. Beck, Julian M. Wallis, Martin D. Attwood, Stephen D. Newman
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Jul 8, 1994
Inventors
Anthony L. Beck
Julian M. Wallis
Martin D. Attwood
Stephen D. Newman
Assignee (at issue)
Minnesota Mining and Manufacturing 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.