Patent Assignment
Reel/Frame 007931/0052
Assignment of Assignor's Interest
Recorded: 1996-03-18
Pages: 4
Assignors
HAMPTON, JOHN T. III
Executed: 1996-03-18
TRAINOR, WILLIAM F.
Executed: 1996-03-18
BANDY, THOMAS R.
Executed: 1996-03-18
Assignee
PROTECHNICS INTERNATIONAL, INC.
SUITE #444, 1160 DAIRY ASHFORD, HOUSTON, TEXAS, 77079
Covered Property
(1)
Electrically Insulative Threaded Connection
Patent:
5,749,605 →
Application:
08/618,283 →
Related Assignments
(7)
Other recorded transfers of the patent in this record — the chain of ownership.
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
Feb 11, 1999
From: PROTECHNICS INTERNATIONAL, INC.
To: CORE LABORATORIES, INC.
Reel/Frame 009748/0643 →
Assignment of Assignor's Interest
Mar 5, 2001
From: CORE LABORATORIES, INC.
To: NORTHSTAR DRILLING SYSTEMS, INC.
Reel/Frame 011874/0335 →
Appointment of Agent
Oct 29, 2001
From: OWNER, NORTHSTAR DRILLING SYSTEMS INC.
To: LAMBERT, ANTHONY R.
Reel/Frame 012287/0206 →
Transfer of Title
Jul 23, 2004
From: NORTHSTAR DRILLING SYSTEMS INC.
To: NQL ENERGY SERVICES CANADA LTD.
Reel/Frame 014892/0200 →
Change of Name
Oct 26, 2006
From: CORE LABORATORIES, INC.
To: CORE LABORATORIES LP
Reel/Frame 018433/0623 →
Assignment of Assignor's Interest
Apr 30, 2008
From: NQL ENERGY SERVICES CANADA LTD.
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 020876/0333 →