Granted Patent
Utility
US 5,182,389 · App. 07/828,053
Process for the preparation of 2-(2',4'-dihydroxyphenyl)-4,6-diaryl-s-triazines
Inventor:
Kurt Burdeska
Patented Case
View Patent ↗
Granted: Jan 26, 1993
Filed: Jan 30, 1992
Inventor
Kurt Burdeska
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.