Assignment of Assignor's Interest

Recorded: 2007-05-16 Pages: 13

Assignor

ELKCORP

Executed: 2005-05-31

Assignee

ORTLOFF ENGINEERS, LTD.

415 W. WALL, SUITE 2000, MIDLAND, TEXAS, 79701

Covered Property (1)

Hydrocarbon Gas Processing

Patent: 5,983,664 →

Application: 09/054,802 →

Related Assignments (2)

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