Granted Patent
Utility
US 4,855,337 · App. 06/866,487
Heterogeneous polymers
Inventors:
Claude Dequatre, Peter Blanpain, Michel Longuet
Patented Case
View Patent ↗
Granted: Aug 8, 1989
Filed: May 23, 1986
Inventors
Claude Dequatre
Peter Blanpain
Michel Longuet
Assignee (at issue)
Polysar Financial Services 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.