Granted Patent
Utility
US 5,356,976 · App. 08/090,836
2,4-dialkyl-6-sec- alkylphenols
Inventors:
Paul Dubs, Rita Pitteloud
Patented Case
View Patent ↗
Granted: Oct 18, 1994
Filed: Jul 12, 1993
Inventors
Paul Dubs
Rita Pitteloud
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.