Granted Patent
Utility
US 5,409,980 · App. 08/084,227
Flame retardant compositions
Inventor:
Edward A. Myszak, Jr.
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Oct 18, 1993
Inventor
Edward A. Myszak, Jr.
Assignee (at issue)
PQ 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.