Patent Assignment
Reel/Frame 020876/0333
Assignment of Assignor's Interest
Recorded: 2008-04-30
Pages: 5
Assignor
NQL ENERGY SERVICES CANADA LTD.
Executed: 2007-03-29
Assignee
NATIONAL OILWELL VARCO, L.P.
10000 RICHMOND AVENUE, SUITE 400, HOUSTON, TEXAS, 77042
Covered Properties
(19)
Apparatus and Method for Logging Wells While Drilling
Patent:
4,578,675 →
Application:
06/429,823 →
Apparatus and Method for Logging Wells While Drilling
Patent:
4,630,243 →
Application:
06/477,262 →
Apparatus and Method for Down-Hole Em Telemetry While Drilling
Patent:
4,739,325 →
Application:
06/838,639 →
Universal Joint for Downhole Motors
Patent:
5,000,723 →
Application:
07/341,486 →
Bendable Drilling Sub
Patent:
5,029,654 →
Application:
07/552,987 →
Adjustable Bent Sub
Patent:
5,125,463 →
Application:
07/636,433 →
Short Stack Bearing Assembly
Patent:
5,248,204 →
Application:
07/835,595 →
Surface Adjustable Adjustable Bent Housing
Patent:
5,495,901 →
Application:
08/395,995 →
Downhole Sub for Directional Drilling
Patent:
5,638,910 →
Application:
08/507,776 →
Method and Apparatus for Communicating Signals from Within an Encased Borehole
Patent:
5,576,703 →
Application:
08/574,950 →
Electrically Insulative Threaded Connection
Patent:
5,749,605 →
Application:
08/618,283 →
Downhole Sub with Kick Pad for Directional Drilling
Patent:
6,073,707 →
Application:
09/057,709 →
Tool Catcher
Patent:
6,145,602 →
Application:
09/262,924 →
Locking Swivel Device
Patent:
6,378,630 →
Application:
09/458,604 →
Hydraulic drilling jar
Patent:
6,263,986 →
Application:
09/538,138 →
Stabilized Downhole Drilling Motor
Patent:
6,722,453 →
Application:
09/857,971 →
Rotary Steerable Drilling Tool
Rotary Steerable Drilling Tool and Associated Method of Use
Blockless Reamer
Related Assignments
(25)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Sep 30, 1982
From: MACLEOD, NORMAN C.
To: MACLEOD LABORATORIES, INC., A CORP. OF CA.
Reel/Frame 004055/0383 →
Assignment of Assignors Interest.
Mar 21, 1983
From: MACLEOD, NORMAN C.
To: MACLEOD LABORATORES, INC., A CA CORP.
Reel/Frame 004136/0711 →
Assignment of Assignors Interest.
Mar 6, 1986
From: MACLEOD, NORMAN C.
To: MACLEOD LABORTORIES INCORPORATED, A CORP OF CALIFORNIA
Reel/Frame 004542/0491 →
Assignment of Assignors Interest.
Apr 21, 1989
From: LIVINGSTONE, RAY
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 005081/0384 →
Assignment of Assignors Interest.
Jan 27, 1992
From: MACLEOD LABORATORIES, INC., A CA CORPORATION
To: PROTECHNICS RESERVOIR SERVICES, INC. A NV CORPORATION
Reel/Frame 005988/0650 →
Assignment of Assignors Interest.
Apr 10, 1992
From: LIVINGSTONE, RAYMOND S.; KUTINSKY, DAVID P.
To: CANADIAN DOWHOLE DRILL SYSTEMS INC.
Reel/Frame 006080/0305 →
Assignment of Assignor's Interest
Jun 25, 1993
From: LIVINGSTONE, RAYMOND S. S.; LIVINGSTONE, RAYMOND D.
To: CANADIAN DOWNHOLE DRILL SYSTEMS, INC.
Reel/Frame 006587/0582 →
Assignment of Assignor's Interest
Jan 19, 1995
From: SMITH, WINSTON; WILSON, MURRAY
To: BLACK MAX DOWNHOLE TOOL LTD.
Reel/Frame 007288/0424 →
Assignment of Assignor's Interest
Feb 28, 1995
From: LIVINGSTONE, RAYMOND DEAN; KUTINSKY, DAVID; WILSON, MURRAY; SMITH, WINSTON
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 007425/0215 →
Assignment of Assignor's Interest
Apr 19, 1995
From: BLACK MAX DOWNHOLE TOOL LTD.
To: CANADIAN DOWNHILL DRILL SYSTEMS INC.
Reel/Frame 007437/0402 →
Assignment of Assignor's Interest
Jul 26, 1995
From: NOE, PAUL; KUTINSKY, DAVID; BLACK MAX DOWNHOLE TOOL LTD.
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 007591/0267 →
Assignment of Assignor's Interest
Mar 18, 1996
From: HAMPTON, JOHN T. III; TRAINOR, WILLIAM F.; BANDY, THOMAS R.
To: PROTECHNICS INTERNATIONAL, INC.
Reel/Frame 007931/0052 →
Assignment of Assignor's Interest
Feb 24, 1998
From: PROTECHNICS INTERNATIONAL, INC.
To: CORE LABORATIORES, INC.
Reel/Frame 009014/0144 →
Assignment of Assignor's Interest
Apr 9, 1998
From: NOE, PAUL; KUTINSKY, DAVID
To: CANADIAN DOWNHOLE DRILL SYSTEMS, INC.
Reel/Frame 009113/0646 →
Assignment of Assignor's Interest
Feb 11, 1999
From: PROTECHNICS INTERNATIONAL, INC.
To: CORE LABORATORIES, INC.
Reel/Frame 009748/0643 →
Assignment of Assignor's Interest
Feb 11, 1999
From: REAL TIME DIAGNOSTICS, INC.
To: CORE LABORATORIES, INC.
Reel/Frame 009748/0661 →
Assignment of Assignor's Interest
Feb 11, 1999
From: PROTECHNICS RESERVOIR SERVICES, INC.
To: CORE LABORATORIES, INC.
Reel/Frame 009748/0654 →
Assignment of Assignor's Interest
Mar 5, 1999
From: KUTINSKY, DAVID
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 009826/0852 →
Release
Mar 2, 2000
From: FLEET CAPITAL CORPORATION
To: BLACK WARRIOR WIRELINE CORP.
Reel/Frame 010572/0514 →
Assignment of Assignor's Interest
Apr 6, 2000
From: RITORTO, LEONARDO; ROSZAK, ROBERT
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 010724/0330 →
Assignment of Assignor's Interest
Jul 11, 2000
From: MASSNER, PERRY; STANG, DARREN L.
To: CANADIAN DOWNHOLE DRILL SYSTEMS, INC.
Reel/Frame 010914/0296 →
Assignment of Assignor's Interest
Mar 5, 2001
From: CORE LABORATORIES, INC.
To: NORTHSTAR DRILLING SYSTEMS, INC.
Reel/Frame 011874/0335 →
Assignment of Assignor's Interest
Sep 10, 2001
From: NOE, PAUL; KUTINSKY, DAVID P.
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 012152/0656 →
Appointment of Agent
Oct 29, 2001
From: OWNER, NORTHSTAR DRILLING SYSTEMS INC.
To: LAMBERT, ANTHONY R.
Reel/Frame 012287/0206 →
Corrective Assignment to Correct the Assignee's Address Previously Recorded on Reel 012152, Frame 0656. Assignor Hereby Confirms the Assignment of the Entire Interest.
Dec 27, 2001
From: NOE, PAUL; KUTINSKY, DAVID P.
To: CANADIAN DOWNHOLE DRILL SYSTEMS INC.
Reel/Frame 012402/0478 →