Granted Patent
Utility
US 5,919,839 · App. 08/907,805
Phase change ink formulation using an isocyanate-derived wax and a clear ink carrier base
Inventors:
Donald R. Titterington, Jeffery H. Banning, Clifford R. King
Patented Case
View Patent ↗
Granted: Jul 6, 1999
Filed: Aug 8, 1997
Inventors
Donald R. Titterington
Jeffery H. Banning
Clifford R. King
Assignee (at issue)
Tektronix, Inc.
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.