Granted Patent
Utility
US 6,790,972 · App. 10/019,167
Polymerisation catalysts
Inventors:
Hanh Nguyen Ngoc, Heinz Gornitzka, Blanca Martin-Vaca, Didier Bourissou, Guy Bertrand, Jean-Bernard Cazaux
Patented Case
View Patent ↗
Granted: Sep 14, 2004
Filed: Dec 20, 2001
Inventors
Hanh Nguyen Ngoc
Heinz Gornitzka
Blanca Martin-Vaca
Didier Bourissou
Guy Bertrand
Jean-Bernard Cazaux
Assignees (at issue)
Société de Conseils de Recherches et d'Applications Scientifiques (S.C.R.A.S) SAS
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE
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.