Granted Patent
Utility
US 4,283,327 · App. 06/068,275
2-(2-Hydroxy-3,5-di-tert-octylphenyl)-2H-benzotriazole stabilized compositions
Inventors:
Martin Dexter, Roland A. E. Winter
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Aug 20, 1979
Inventors
Martin Dexter
Roland A. E. Winter
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.