Granted Patent
Utility
US 5,118,739 · App. 07/540,761
Flame retardant macromolecular materials containing brominated aromatic sulfonic acid salts
Inventors:
Burton J. Sutker, Saadat Hussain
Patented Case
View Patent ↗
Granted: Jun 2, 1992
Filed: Jun 20, 1990
Inventors
Burton J. Sutker
Saadat Hussain
Assignee (at issue)
Ethyl Corporation
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.