Granted Patent
Utility
US 5,451,646 · App. 08/349,276
Technique for reducing the molecular weight and improving the processability of cis-1,4-polybutadiene
Inventor:
Kenneth F. Castner
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Dec 5, 1994
Inventor
Kenneth F. Castner
Assignee (at issue)
THE GOODYEAR TIRE & RUBBER COMPANY
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.