Granted Patent
Utility
US 5,965,643 · App. 08/640,303
Synergistic stabilizer mixture
Inventor:
Francois Gugumus
Patented Case
View Patent ↗
Granted: Oct 12, 1999
Filed: Apr 30, 1996
Inventor
Francois Gugumus
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.