Granted Patent
Utility
US 6,706,815 · App. 10/210,466
Impact resistant rigid PVC compositions using hydrocarbon rubbers and chlorinated polyethylene as impact modifiers
Inventors:
Gary R. Marchand, Mark T. Berard
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Jul 31, 2002
Inventors
Gary R. Marchand
Mark T. Berard
Assignee (at issue)
DUPONT DOW ELASTOMERS, LLC
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.