Granted Patent
Utility
US 4,028,285 · App. 05/744,578
Styrene polymer foams having reduced flammability containing allyl ether synergists
Inventor:
Walter O. Pillar
Patented Case
View Patent ↗
Granted: Jun 7, 1977
Filed: Nov 24, 1976
Inventor
Walter O. Pillar
Assignee (at issue)
Arco Polymers, 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.