Granted Patent
Utility
US 6,429,273 · App. 09/142,661
Process for the preparation of vinylic polymers, polymerization initiator for vinylic monomers, and styrene resin composition
Inventor:
Kenji Ebara
Patented Case
View Patent ↗
Granted: Aug 6, 2002
Filed: Sep 14, 1998
Inventor
Kenji Ebara
Assignee (at issue)
ASAHI KASEI KABUSHIKI KAISHA
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.