IP Library › Assignment 005988/0650
Patent Assignment
Reel/Frame 005988/0650

Assignment of Assignors Interest.

Recorded: 1992-01-27 Pages: 3
Assignor
Assignee
Covered Properties (4)
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 →
Mwd Tool for Measuring Weight and Torque on Bit
Patent: 4,608,861 →
Application: 06/668,980 →
Apparatus and Method for Down-Hole Em Telemetry While Drilling
Patent: 4,739,325 →
Application: 06/838,639 →
Related Assignments (11)
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. Nov 7, 1984
From: WACHTLER, WILLIAM J.; YANG, THOMAS M.
To: MACLEOD LABORATORIES, INC., A CORP. OF CA
Reel/Frame 004333/0211 →
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 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, 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 →