Granted Patent
Utility
US 5,744,599 · App. 08/604,536
Triazinyldiaminostilbene compounds useful as ultraviolet absorbers and as fluorescent whitening agents
Inventors:
Dieter Reinehr, Claude Eckhardt, Robert Hochberg, Werner Kaufmann, Georges Metzger
Patented Case
View Patent ↗
Granted: Apr 28, 1998
Filed: Feb 21, 1996
Inventors
Dieter Reinehr
Claude Eckhardt
Robert Hochberg
Werner Kaufmann
Georges Metzger
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.