Granted Patent
Utility
US 6,800,705 · App. 10/154,631
Catalytic system, its method for preparation and method for preparation of a copolymer of ethylene and a conjugated diene
Inventors:
Fanny Barbotin, Cristophe Boisson, Roger Spitz
Patented Case
View Patent ↗
Granted: Oct 5, 2004
Filed: May 23, 2002
Inventors
Fanny Barbotin
Cristophe Boisson
Roger Spitz
Assignee (at issue)
MICHELIN RECHERCHE ET TECHNIQUE S.A.
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.