Granted Patent
Utility
US 4,889,560 · App. 07/227,846
Phase change ink composition and phase change ink produced therefrom
Inventors:
Charles W. Jaeger, Donald R. Titterington, Hu P. Le, Jeffrey J. Sopko
Patented Case
View Patent ↗
Granted: Dec 26, 1989
Filed: Aug 3, 1988
Inventors
Charles W. Jaeger
Donald R. Titterington
Hu P. Le
Jeffrey J. Sopko
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.