Patent Assignment
Reel/Frame 015262/0606
Change of Name
Recorded: 2004-04-13
Pages: 2
Assignor
ELCOR CORPORATION
Executed: 2002-08-14
Assignee
ELKCORP
14911 QUOROM DRIVE, SUITE 600, DALLAS, TEXAS, 75254
Covered Property
(1)
Natural Gas Liquefaction
Related Assignments
(4)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignor's Interest
Nov 15, 2004
From: WILKINSON, JOHN D.; HUDSON, HANK; CUELLER, KYLE T.
To: ELKCORP
Reel/Frame 015376/0454 →
Assignment of Assignor's Interest
Nov 1, 2005
From: ELKCORP
To: ORTLOFF ENGINEERS, LTD.
Reel/Frame 016712/0220 →
Corrective Assignment to Correct the Assignee Name and Address Previously Recorded on Reel 016712 Frame 0220. Assignor(S) Hereby Confirms the Assignment.
Feb 24, 2006
From: ELKCORP
To: TORGO LTD.
Reel/Frame 017215/0131 →
Change of Name
Apr 13, 2007
From: TORGO, LTD.
To: ORTLOFF ENGINEERS, LTD.
Reel/Frame 019193/0465 →