Granted Patent
Utility
US 4,604,422 · App. 06/685,361
Flame-retardant molded composition incorporating a poly[N-(bromophenyl)maleimide-co-styrene-co-maleic anhydride] copolymer
Inventor:
Usama E. Younes
Patented Case
View Patent ↗
Granted: Aug 5, 1986
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.