Assignment of Assignor's Interest

Recorded: 2009-01-27 Pages: 2

Assignors

GONZALEZ, MANUEL E.

Executed: 2009-01-15

LLEWELLYN, BRIAN C.

Executed: 2008-12-18

BLOYS, JAMES B.

Executed: 2008-12-18

Assignee

CHEVRON U.S.A. INC.

6001 BOLLINGER CANYON ROAD, SAN RAMON, CALIFORNIA, 94583

Covered Property (1)

Controlling the Pressure Within an Annular Volume of a Wellbore

Patent: 7,743,830 →

Application: 12/249,852 →

Publication: US 2009/0133878

Related Assignments (2)

Other recorded transfers of the patent in this record — the chain of ownership.