Granted Patent
Utility
US 4,906,739 · App. 07/368,163
Fibre-reactive azo dyes containing a monofluororotriazine group
Inventors:
Herbert Seiler, Gert Hegar
Patented Case
View Patent ↗
Granted: Mar 6, 1990
Filed: Jun 15, 1989
Inventors
Herbert Seiler
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.