Granted Patent
Utility
US 5,047,458 · App. 07/492,945
Melamine salts of alkyl acid phosphates as flame retardants for polymers
Inventors:
Richard F. Grossman, Francis W. McKane, Jr.
Patented Case
View Patent ↗
Granted: Sep 10, 1991
Filed: Mar 13, 1990
Inventors
Richard F. Grossman
Francis W. McKane, Jr.
Assignee (at issue)
Synthetic Products 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.