Granted Patent
Utility
US 5,227,477 · App. 07/736,196
Dyes having one or two 2,4- or 4,6-dichloro-5-cyanopyrimidyl groups linked through bridging radicals containing at least two nitrogen atoms to chloro-1,3,5-triazinyl groups
Inventors:
Gunther Auerbach, Kurt Brenneisen, Markus Doerr, Paul Doswald, Markus Gisler, Werner Koch, Helmut Moser, Roland Wald
Patented Case
View Patent ↗
Granted: Jul 13, 1993
Filed: Jul 26, 1991
Inventors
Gunther Auerbach
Kurt Brenneisen
Markus Doerr
Paul Doswald
Markus Gisler
Werner Koch
Helmut Moser
Roland Wald
Assignee (at issue)
Sandoz AG
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.