Granted Patent
Utility
US 5,859,280 · App. 08/886,626
Methods for inhibiting the polymerization of vinyl monomers
Inventor:
Graciela B. Arhancet
Patented Case
View Patent ↗
Granted: Jan 12, 1999
Filed: Jul 1, 1997
Inventor
Graciela B. Arhancet
Assignee (at issue)
Betzdearborn, Inc.
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.