Granted Patent
Utility
US 5,084,570 · App. 07/510,494
Process for the preparation of 2-(2',4'-dihydroxyphenyl)-4,6-diaryl-s-triazines
Inventors:
Kurt Burdeska, Franz Gunter
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Apr 18, 1990
Inventors
Kurt Burdeska
Franz Gunter
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.