Granted Patent
Utility
US 4,447,357 · App. 06/243,233
Fibre-reactive azo dyestuffs containing a halotriazinyl radical and a non-reactive triazinyl radical
Inventors:
Gerd Holzle, Rainer Begrich
Patented Case
View Patent ↗
Granted: May 8, 1984
Filed: Mar 16, 1981
Inventors
Gerd Holzle
Rainer Begrich
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.