Granted Patent
Utility
US 4,625,017 · App. 06/441,125
Metal complexes of azo dyes containing a 2-(P-N-aceloacetylaminophenyl) benzothiozole moiety
Inventor:
Alois Puntener
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Nov 12, 1982
Inventor
Alois Puntener
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.