Granted Patent
Utility
US 6,024,894 · App. 09/047,551
Compositions and methods for inhibiting vinyl aromatic monomer polymerization
Inventor:
Graciela B. Arhancet
Patented Case
View Patent ↗
Granted: Feb 15, 2000
Filed: Mar 25, 1998
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.