Granted Patent
Utility
US 5,321,067 · App. 07/903,649
Stabilizers derived from 3,5-dialkyl-4-aminobenzenethiol
Inventor:
Stephen D. Pastor
Patented Case
View Patent ↗
Granted: Jun 14, 1994
Filed: Jun 24, 1992
Inventor
Stephen D. Pastor
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.