Granted Patent
Utility
US 5,242,961 · App. 07/889,349
Color prevention in titanium catalyzed hydrogenated diene polymers
Inventors:
Linda R. Chamberlain, Carma J. Gibler, Miguel Prado
Patented Case
View Patent ↗
Granted: Sep 7, 1993
Filed: May 28, 1992
Inventors
Linda R. Chamberlain
Carma J. Gibler
Miguel Prado
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.