Patent Assignment
Reel/Frame 009748/0661
Assignment of Assignor's Interest
Recorded: 1999-02-11
Pages: 5
Assignor
REAL TIME DIAGNOSTICS, INC.
Executed: 1998-12-31
Assignee
CORE LABORATORIES, INC.
5295 HOLLISTER ROAD, HOUSTON, TEXAS, 77040
Covered Property
(1)
Method and Apparatus for Communicating Signals from Within an Encased Borehole
Patent:
5,576,703 →
Application:
08/574,950 →
Related Assignments
(6)
Other recorded transfers of the patent in this record — the chain of ownership.
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 →
Security Interest
Sep 12, 2003
From: NORTHSTAR DRILLING SYSTEMS INC.
To: CANADIAN IMPERIAL BANK OF COMMERCE
Reel/Frame 014506/0431 →
Release of Security Interest
Mar 18, 2004
From: CANADIAN IMPERIAL BANK OF COMMERCE
To: NORTHSTAR DRILLING SYSTEMS INC.
Reel/Frame 015116/0519 →
Transfer of Title
Jul 23, 2004
From: NORTHSTAR DRILLING SYSTEMS INC.
To: NQL ENERGY SERVICES CANADA LTD.
Reel/Frame 014892/0200 →
Assignment of Assignor's Interest
Apr 30, 2008
From: NQL ENERGY SERVICES CANADA LTD.
To: NATIONAL OILWELL VARCO, L.P.
Reel/Frame 020876/0333 →