Granted Patent
Utility
US 6,576,161 · App. 09/997,781
Polyphosphate ester morpholides, mixtures thereof, and thermoplastic resin compositions containing polyphosphate ester morpholides as flame retardants
Inventors:
Jong Cheol Lim, Kyung-Hoon Seo, Sam-Joo Yang
Patented Case
View Patent ↗
Granted: Jun 10, 2003
Filed: Nov 28, 2001
Inventors
Jong Cheol Lim
Kyung-Hoon Seo
Sam-Joo Yang
Assignee (at issue)
CHEIL INDUSTRIES INC.
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.