Granted Patent
Utility
US 6,015,847 · App. 09/023,816
Magenta phase change ink formulation containing organic sulfonic acid
Inventors:
Donald R. Titterington, Michael B. Meinhardt, Jeffery H. Banning, Clifford R. King
Patented Case
View Patent ↗
Granted: Jan 18, 2000
Filed: Feb 13, 1998
Inventors
Donald R. Titterington
Michael B. Meinhardt
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.