Granted Patent
Utility
US 5,591,850 · App. 08/340,952
o-Hydroxyphenyl-s-triazines
Inventors:
Jean-Luc Birbaum, J urgen Kaschig, Dieter Reinehr, Manfred Rembold, Andr e Schmitter, Helmut Luther, Bernd Herzog, Dietmar H uglin
Patented Case
View Patent ↗
Granted: Jan 7, 1997
Filed: Nov 17, 1994
Inventors
Jean-Luc Birbaum
J urgen Kaschig
Dieter Reinehr
Manfred Rembold
Andr e Schmitter
Helmut Luther
Bernd Herzog
Dietmar H uglin
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.