Patent Assignment
Reel/Frame 016309/0502
Assignment of Assignor's Interest
Recorded: 2005-02-25
Pages: 2
Assignor
TREE SAVERS INTERNATIONAL INC.
Executed: 2005-02-04
Assignee
STINGER WELLHEAD PROTECTION INC.
P.O. BOX 1639, ALLEN, TEXAS, 75013
Covered Properties
(3)
Packoff Nipple
Patent:
5,261,487 →
Application:
07/909,680 →
Wellhead Isolation Tool and Method of Use Thereof
Patent:
5,285,852 →
Application:
07/909,716 →
Well Head Isolation Tool Sealing Nipple Testing Apparatus and Method of Pressure Testing Isolation Tool Sealing Nipple Seals When in Position on a Well
Patent:
5,396,956 →
Application:
08/165,495 →
Related Assignments
(6)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jan 29, 2002
From: TREE SAVERS INTERNATIONAL LTD.
To: TREE SAVERS INTERNATIONAL INC.
Reel/Frame 012520/0409 →
Assignment of Assignor's Interest
Jun 14, 2004
From: TREE SAVERS INTERNATIONAL INC.
To: STINGER WELLHEAD PROTECTION INC.
Reel/Frame 015452/0633 →
Assignment of Assignor's Interest
Sep 6, 2005
From: STINGER WELLHEAD PROTECTION INC.
To: HWCES INTERNATIONAL, A CAYMAN ISLANDS CORPORATION
Reel/Frame 016958/0913 →
Assignment of Assignor's Interest
Dec 21, 2006
From: OIL STATES ENERGY SERVICES, INC.
To: STINGER WELLHEAD PROTECTION, INC.
Reel/Frame 018767/0230 →
Change of Assignee Address
Jul 19, 2007
From: STINGER WELLHEAD PROTECTION, INC.
To: STINGER WELLHEAD PROTECTION, INC.
Reel/Frame 019588/0172 →
Merger
Oct 15, 2012
From: STINGER WELLHEAD PROTECTION, INCORPORATED
To: OIL STATES ENERGY SERVICES, L.L.C.
Reel/Frame 029130/0379 →