Patent Assignment
Reel/Frame 015657/0817
Assignment of Assignor's Interest
Recorded: 2004-07-08
Pages: 4
Assignors
RUNIA, DOUWE JOHANNES
Executed: 2004-06-10
SMITH, DAVID GEORGE LIVESEY
Executed: 2004-01-12
WORRALL, ROBERT NICHOLAS
Executed: 2004-06-09
Assignee
SHELL OIL COMPANY
P.O. BOX 2463, 910 LOUISIANA, HOUSTON, TEXAS, 77252-2463
Covered Property
(1)
Injecting a Fluid into a Borehole Ahead of the Bit
Related Assignments
(2)
Other recorded transfers of the patent in this record — the chain of ownership.