Patent Assignment
Reel/Frame 013459/0721
Assignment of Assignor's Interest
Recorded: 2002-10-31
Pages: 3
Assignors
VINEGAR, HAROLD J.
Executed: 2002-09-24
DE ROUFFIGNAC, ERIC PIERRE
Executed: 2002-09-24
WELLINGTON, SCOTT LEE
Executed: 2002-09-24
Assignee
SHELL OIL COMPANY
P.O. BOX 2463, HOUSTON, TEXAS, 77252-8463
Covered Property
(1)
In Situ Thermal Processing of an Oil Shale Formation Having Permeable and Impermeable Sections