Granted Patent
Utility
US 5,686,233 · App. 08/539,150
Bisresorcinyltriazines
Inventors:
Andreas Valet, Jean-Luc Birbaum, Vien Van Toan, Walter Knupp
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Oct 4, 1995
Inventors
Andreas Valet
Jean-Luc Birbaum
Vien Van Toan
Walter Knupp
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.