Granted Patent
Utility
US 5,501,940 · App. 08/065,345
Process for protecting a binary image with a siloxane durable layer that is not removable by hexane, isopropanol or water
Inventors:
Iris B. K. Bloom, Agota F. Fehervari, Russell Gaudiana, Richard A. Minns, Howard G. Schild
Patented Case
View Patent ↗
Granted: Mar 26, 1996
Filed: May 20, 1993
Inventors
Iris B. K. Bloom
Agota F. Fehervari
Russell Gaudiana
Richard A. Minns
Howard G. Schild
Assignee (at issue)
Polaroid Corporation
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.