Patent Assignment
Reel/Frame 022520/0358
Release of Security Interest
Recorded: 2009-04-08
Pages: 5
Assignor
Assignee
PATHFINDER ENERGY SERVICES, INC.
15151 SOMMERMEYER ST., HOUSTON, TEXAS, 77041
Covered Properties
(17)
Acoustic Attenuator, Well Logging Apparatus and Method of Well Logging
Patent:
5,510,582 →
Application:
08/398,979 →
Standoff Compensation for Acoustic Logging While Drilling Systems
Patent:
5,726,951 →
Application:
08/430,822 →
Acoustic Transducer for Lwd Tool
Patent:
5,644,186 →
Application:
08/483,112 →
Downhole Tool for Controlling the Drilling Course of a Borehole
Patent:
5,603,386 →
Application:
08/524,953 →
Cancellation of Tool Mode Signal from Combined Signal
Patent:
5,780,784 →
Application:
08/733,367 →
Method of and Apparatus for Independently Determining the Resistivity and/or Dielectric Constant of an Earth Formation
Sprung Member and Actuator for Downhole Tools
Estimation of Formation Porosity Using Water Measurement
Passive Ranging Techniques in Borehole Surveying
Supplemental Referencing Techniques in Borehole Surveying
Downhole Referencing Techniques in Borehole Surveying
Optimized Battery Life in Multiple Battery Applications
Series-Resonant Tuning of a Downhole Loop Antenna
Matching Layer Assembly for a Downhole Acoustic Sensor
Composite Backing Layer for a Downhole Acoustic Sensor
Acoustic Sensor for Downhole Measurement Tool
Pressure Controlled Fluid Sampling Apparatus and Method
Related Assignments
(5)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 10, 2009
From: PATHFINDER ENERGY SERVICES, INC.
To: SMITH INTERNATIONAL, INC.
Reel/Frame 022231/0733 →
Release of Security Interest
Mar 27, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022460/0304 →
Release of Security Interest
Mar 27, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022460/0309 →
Release of Security Interest
Apr 8, 2009
From: WELLS FARGO BANK, NATIONAL ASSOCIATION, AS SUCCESSOR BY MERGER TO WELLS FARGO BANK TEXAS, N.A. (AS ADMINISTRATIVE AGENT)
To: PATHFINDER ENERGY SERVICES, INC.
Reel/Frame 022520/0291 →
Assignment of Assignor's Interest
Oct 17, 2012
From: SMITH INTERNATIONAL, INC.
To: SCHLUMBERGER TECHNOLOGY CORPORATION
Reel/Frame 029143/0015 →