Granted Patent
Utility
US 5,679,288 · App. 08/671,224
Blend of polyphosphate flame retardant and liquid crystalline additive
Inventors:
Ki-Soo Kim, Sophia Dashevsky, Alan M. Aaronson, Johst H. Burk
Patented Case
View Patent ↗
Granted: Oct 21, 1997
Filed: Jun 27, 1996
Inventors
Ki-Soo Kim
Sophia Dashevsky
Alan M. Aaronson
Johst H. Burk
Assignee (at issue)
AKZO NOBEL N.V.
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.