Granted Patent
Utility
US 6,172,142 · App. 09/287,789
Thermal transfer medium with phase isolated reactive components
Inventors:
Michael A. Lorenz, Joseph D. Roth
Patented Case
View Patent ↗
Granted: Jan 9, 2001
Filed: Apr 7, 1999
Inventors
Michael A. Lorenz
Joseph D. Roth
Assignee (at issue)
NCR 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.