Granted Patent
Utility
US 5,350,870 · App. 08/045,133
Thermal imaging methods and materials
Inventors:
Roger A. Boggs, Richard L. Cournoyer, Ernest W. Ellis, Sandra E. Russo-Rodriguez, Stephen J. Telfer, David P. Waller, Michael J. Zuraw
Patented Case
View Patent ↗
Granted: Sep 27, 1994
Filed: Apr 12, 1993
Inventors
Roger A. Boggs
Richard L. Cournoyer
Ernest W. Ellis
Sandra E. Russo-Rodriguez
Stephen J. Telfer
David P. Waller
Michael J. Zuraw
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.