Granted Patent
Utility
US 5,286,612 · App. 07/965,161
Process for generation of free superacid and for imaging, and imaging medium for use therein
Inventor:
Stephen J. Telfer
Patented Case
View Patent ↗
Granted: Feb 15, 1994
Filed: Oct 23, 1992
Inventor
Stephen J. Telfer
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.