Granted Patent
Utility
US 5,079,365 · App. 07/569,914
Triazolopyridine dyes and thermal transfer of methine dyes
Inventors:
Rudiger Sens, Ernst Schefczik, Karl-Heinz Etzbach, Gunther Lamm, Helmut Reichelt, Matthias Wiesenfeldt
Patented Case
View Patent ↗
Granted: Jan 7, 1992
Filed: Aug 20, 1990
Inventors
Rudiger Sens
Ernst Schefczik
Karl-Heinz Etzbach
Gunther Lamm
Helmut Reichelt
Matthias Wiesenfeldt
Assignee (at issue)
BASF SE
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.