Granted Patent
Utility
US 5,122,605 · App. 07/484,582
Sulfo group containing triphendioxazines having at least one 1,3,5-triazine ring
Inventor:
Reinhard Pedrazzi
Patented Case
View Patent ↗
Granted: Jun 16, 1992
Filed: Feb 23, 1990
Inventor
Reinhard Pedrazzi
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.