Granted Patent
Utility
US 5,489,718 · App. 08/392,693
Compositions and methods for inhibiting vinyl aromatic monomer polymerization
Inventor:
Graciela B. Arhancet
Patented Case
View Patent ↗
Granted: Feb 6, 1996
Filed: Feb 23, 1995
Inventor
Graciela B. Arhancet
Assignee (at issue)
Betz Laboratories, 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.