Granted Patent
Utility
US 5,310,773 · App. 07/893,293
Perfluoroalkyl substituted hydroxyphenylalkanoic ester antioxidants and stabilized compositions
Inventors:
Robert A. Falk, Eduard K. Kleiner
Patented Case
View Patent ↗
Granted: May 10, 1994
Filed: Jun 4, 1992
Inventors
Robert A. Falk
Eduard K. Kleiner
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.