Patent Assignment
Reel/Frame 013542/0806
Change of Name
Recorded: 2002-12-05
Pages: 2
Assignor
ELCOR CORPORATION
Executed: 2002-09-01
Assignee
ELKCORP
14643 DALLAS PARKWAY, SUITE 1000, DALLAS, TEXAS, 75240-8871
Covered Property
(1)
Gas Processing
Patent:
5,275,005 →
Application:
07/983,884 →
Related Assignments
(5)
Other recorded transfers of the patent in this record — the chain of ownership.
Assignment of Assignors Interest.
Dec 1, 1992
From: CAMPBELL, ROY E.; WILKINSON, JOHN D.; HUDSON, HANK M.
To: ELCOR CORPORATION
Reel/Frame 006362/0800 →
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 019193/0489 →
Change of Name
Apr 20, 2007
From: TORGO, LTD.
To: ORTLOFF ENGINEERS, LTD.
Reel/Frame 019204/0948 →