Granted Patent
Utility
US 4,968,783 · App. 07/299,164
Amino-fluoro-S-triazine disazo dyes of the H-acid series
Inventors:
Karl Seitz, Gert Hegar
Patented Case
View Patent ↗
Granted: Nov 6, 1990
Filed: Jan 19, 1989
Inventors
Karl Seitz
Gert Hegar
Assignee (at issue)
Ciba-Geigy
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.