Granted Patent
Utility
US 5,922,813 · App. 08/476,025
Block copolymer of propylene and ethylene
Inventors:
Jean-Louis Costa, Sabine Pamart, Gaetane Hallot
Patented Case
View Patent ↗
Granted: Jul 13, 1999
Filed: Jun 7, 1995
Inventors
Jean-Louis Costa
Sabine Pamart
Gaetane Hallot
Assignee (at issue)
Solvay Polyolefins Europe-Belgium (Societe Anonyme)
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.