Granted Patent
Utility
US 5,843,579 · App. 08/671,051
Magnetic thermal transfer ribbon with aqueous ferrofluids
Inventors:
Joseph D. Roth, Richard Moreland
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Jun 27, 1996
Inventors
Joseph D. Roth
Richard Moreland
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.