Patent Assignment
Reel/Frame 009748/0643
Assignment of Assignor's Interest
Recorded: 1999-02-11
Pages: 4
Assignor
PROTECHNICS INTERNATIONAL, INC.
Executed: 1998-12-31
Assignee
CORE LABORATORIES, INC.
5295 HOLLISTER ROAD, HOUSTON, TEXAS, 77040
Covered Properties
(5)
Surface Located Isotope Tracer Injection Apparatus
Patent:
5,049,743 →
Application:
07/466,237 →
Radioactive Tracing with Particles
Patent:
5,182,051 →
Application:
07/666,044 →
Radioactive Tracing with Particles
Patent:
5,243,190 →
Application:
07/792,809 →
Gamma Ray Spectral Tool for Well Logging
Patent:
5,608,214 →
Application:
08/550,287 →
Electrically Insulative Threaded Connection
Patent:
5,749,605 →
Application:
08/618,283 →
Related Assignments
(11)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Jan 17, 1990
From: TAYLOR, LAWRENCE III; CHISHOLM, JOHN W.; THAYER, PHILIP T.
To: PROTECHNICS INTERNATIONAL INC., A TX CORP.
Reel/Frame 005226/0698 →
Assignment of Assignors Interest. Subject to License Recited
Feb 1, 1991
From: OATES, DANIEL E.; WRIGHT, PETER V.; MASSACHUSETTS INSTITUTE OF TECHNOLOGY
To: UNITED STATES OF AMERICA, THE, AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE
Reel/Frame 005584/0819 →
Assignment of Assignors Interest.
Mar 7, 1991
From: BANDY, THOMAS R.; READ, DONNA A.; WALLACE, EDWARD S.
To: PROTECHNICS INTERNATIONAL, INC.
Reel/Frame 005692/0057 →
Assignment of Assignor's Interest
Feb 12, 1996
From: BARON, EMILIO A.; BERNEKING, DAVID J.; CHISHOLM, JOHN W.; FISHER, MARC KEVIN
To: PROTECHNICS INTERNATIONAL, INC.
Reel/Frame 007941/0156 →
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
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 →