Granted Patent
Utility
US 5,162,446 · App. 07/785,114
Depolymerization of conjugated diene polymers
Inventors:
Carma J. Gibler, Linda R. Chamberlain, Richard A. Kemp, Stanley E. Wilson
Patented Case
View Patent ↗
Granted: Nov 10, 1992
Filed: Oct 30, 1991
Inventors
Carma J. Gibler
Linda R. Chamberlain
Richard A. Kemp
Stanley E. Wilson
Assignee (at issue)
SHELL OIL 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.