Granted Patent
Utility
US 6,730,745 · App. 10/257,881
Process for coupling styrenic block copolymers
Inventors:
Robert C. Bening, Carl L. Willis
Patented Case
View Patent ↗
Granted: May 4, 2004
Filed: Feb 3, 2003
Inventors
Robert C. Bening
Carl L. Willis
Assignee (at issue)
KRATON POLYMERS 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.