Patent Assignment
Reel/Frame 023660/0137
Assignment of Assignor's Interest
Recorded: 2009-12-16
Pages: 11
Assignor
SHELL OIL COMPANY
Executed: 2009-10-12
Assignee
THRUBIT B.V.
LANGE KLEIWEG 60F, RIJSWIJK ZH, 2288GK, NETHERLANDS
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.
Assignment of Assignor's Interest
Jul 8, 2004
From: RUNIA, DOUWE JOHANNES; SMITH, DAVID GEORGE LIVESEY; WORRALL, ROBERT NICHOLAS
To: SHELL OIL COMPANY
Reel/Frame 015657/0817 →
Assignment of Assignor's Interest
Oct 4, 2012
From: THRUBIT B.V.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 029072/0908 →