Granted Patent
Utility
US 4,634,731 · App. 06/685,366
Flame-retardant molded composition which incorporates a poly(styrene-co-maleic anhydride-co-dibromostyrene) copolymer
Inventor:
Usama E. Younes
Patented Case
View Patent ↗
Granted: Jan 6, 1987
Filed: Dec 24, 1984
Inventor
Usama E. Younes
Assignee (at issue)
Atlantic Richfield Company
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.