Patent Assignment
Reel/Frame 029130/0379
Merger
Recorded: 2012-10-15
Pages: 11
Assignor
STINGER WELLHEAD PROTECTION, INCORPORATED
Executed: 2011-12-31
Assignee
OIL STATES ENERGY SERVICES, L.L.C.
333 CLAY STREET, HOUSTON, TEXAS, 77002
Covered Properties
(40)
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 →
Apparatus and Method for Completing Recompleting Production Wells
Patent:
5,540,282 →
Application:
08/328,144 →
Apparatus and Method for Completing and Recompleting Wells for Production
Patent:
5,615,739 →
Application:
08/640,335 →
Blowout Preventer Protector and Method of Using Same During Oil and Gas Well Stimulation
Patent:
5,785,121 →
Application:
08/661,995 →
Blowout Preventer Protector for Use During High Pressure Oil/Gas Well Stimulation
Patent:
5,819,851 →
Application:
08/783,860 →
Apparatus for Increasing the Flow of Production Stimulation Fluids Through a Wellhead
Patent:
5,927,403 →
Application:
08/837,574 →
Method and Apparatus for Well Workover or Servicing
Patent:
6,234,253 →
Application:
09/201,619 →
Method and Apparatus for Dual String Well Tree Isolation
Patent:
6,145,596 →
Application:
09/268,460 →
Blowout Preventer Protector and Setting Tool
Patent:
6,289,993 →
Application:
09/338,752 →
Wellhead Isolation Tool and Method of Using Same
Patent:
6,220,363 →
Application:
09/356,231 →
Lockdown Mechanism for Well Tools Requiring Fixed-Point Packoff
Patent:
6,179,053 →
Application:
09/373,418 →
Blowout preventer protector and method of using same
Patent:
6,364,024 →
Application:
09/493,802 →
Blowout Preventer Protector and Method of Using Same
Patent:
6,626,245 →
Application:
09/537,629 →
Method and Apparatus for Perforating and Stimulating Oil Wells
Patent:
6,491,098 →
Application:
09/707,739 →
Dual String Coil Tubing Injector Assembly
Patent:
6,516,891 →
Application:
09/779,087 →
Seal Assembly for Dual String Coil Tubing Injection and Method of Use
Method and Apparatus for Inserting a Tubing Hanger into a Live Well
Spool for Pressure Containment Used in Rigless Well Completion, Re-Completion, Servicing or Workover
Slip Spool and Method of Using Same
Well Stimulation Tool and Method of Using Same
Well Stimulation Tool and Method of Using Same
Reciprocating Lubricator
Cup Tool for High Pressure Mandrel
Slip Spool and Method of Using Same
High Pressure Solid Removal System
Patent:
6,893,558 →
Application:
10/345,520 →
Large Particulate Removal System
Patent:
6,766,856 →
Application:
10/345,543 →
Tree Saver
Patent:
6,823,942 →
Application:
10/345,647 →
Blowout Preventer Protector and Method of Using Same
Casing Mandrel with Well Stimulation Tool and Tubing Head Spool for Use with the Casing Mandrel
Multi-Lock Adapters for Independent Screwed Wellheads and Methods of Using Same
Adapters for Double-Locking Casing Mandrel and Method of Using Same
Drilling Flange and Independent Screwed Wellhead with Metal-to-Metal Seal and Method of Use
Well Stimulation Tool an Method for Inserting a Backpressure Plug Through a Mandrel of the Tool
Metal Ring Gasket for a Threaded Union
System for Accurately Measuring Choke Position
Patent:
7,025,089 →
Application:
10/792,005 →
Wellhead and Control Stack Pressure Test Plug Tool
Hybrid Wellhead System and Method of Use
Casing-Engaging Well Tree Isolation Tool and Method of Use
Large Particulate Removal System
High-pressure plug valve
Related Assignments
(9)
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
Feb 25, 2005
From: TREE SAVERS INTERNATIONAL INC.
To: STINGER WELLHEAD PROTECTION INC.
Reel/Frame 016309/0502 →
Assignment of Assignor's Interest
Jun 24, 2005
From: DALLAS, L. MURRAY
To: HWCES INTERNATIONAL
Reel/Frame 016712/0677 →
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
Mar 9, 2006
From: HWCES INTERNATIONAL
To: HWC ENERGY SERVICES, INC.
Reel/Frame 017636/0559 →
Change of Name
Jun 2, 2006
From: HWC ENERGY SERVICE, INC.
To: OIL STATES ENERGY SERVICES, INC
Reel/Frame 017957/0310 →
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 →
Assignment of Assignor's Interest
Feb 16, 2021
From: OIL STATES INTERNATIONAL, INC.
To: WELLS FARGO BANK, NATIONAL ASSOCIATION
Reel/Frame 055314/0482 →