Granted Patent
Utility
US 5,166,360 · App. 07/697,027
Process for decreasing color in bis-imide flame retardants
Inventors:
Michael G. McKenna, Robert M. Moore, Jr.
Patented Case
View Patent ↗
Granted: Nov 24, 1992
Filed: May 7, 1991
Inventors
Michael G. McKenna
Robert M. Moore, Jr.
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.