Granted Patent
Utility
US 5,216,059 · App. 07/867,991
Flame retardant additive composition useful with polyolefins
Inventors:
Ray W. Atwell, William R. Fielding, Harry A. Hodgen, Nicolai A. Favstritsky
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Apr 13, 1992
Inventors
Ray W. Atwell
William R. Fielding
Harry A. Hodgen
Nicolai A. Favstritsky
Assignee (at issue)
Great Lakes Chemical Corp.
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.