Granted Patent
Utility
US 5,032,498 · App. 07/570,474
Compositions and photographic materials containing 2-(2-hydroxyphenyl)-benztriazoles, as UV-absorbers
Inventors:
Jean Rody, Mario Slongo
Patented Case
View Patent ↗
Granted: Jul 16, 1991
Filed: Aug 21, 1990
Inventors
Jean Rody
Mario Slongo
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.