Patent Assignment
Reel/Frame 008579/0831
Assignment of Assignor's Interest
Recorded: 1997-06-25
Pages: 4
Assignor
ROESCH, ALBERT
Executed: 1997-04-09
Assignee
TREE SAVERS INTERNATIONAL, LTD.
BOX 1454, GRANDE PRAIRIE, T8V 4, CANADA
Covered Properties
(3)
High Pressure Adapter for Well-Heads
Patent:
5,103,900 →
Application:
07/589,035 →
Packoff Nipple
Patent:
5,261,487 →
Application:
07/909,680 →
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
(9)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 25, 1997
From: MCLEOD, RODERICK D.
To: TREE SAVERS INTERNATIONAL, LTD.
Reel/Frame 008579/0827 →
Assignment of Assignor's Interest
Jun 25, 1997
From: CHEREWYK, BRUCE
To: TREE SAVERS INTERNATIONAL LTD.
Reel/Frame 008579/0821 →
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
Feb 25, 2005
From: TREE SAVERS INTERNATIONAL INC.
To: STINGER WELLHEAD PROTECTION INC.
Reel/Frame 016309/0502 →
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 →