Patent Assignment
Reel/Frame 075007/0464
Security Interest
Recorded: 2026-06-18
Pages: 12
Assignor
TGS-NOPEC GEOPHYSICAL COMPANY
Executed: 2026-06-18
Assignee
KROLL TRUSTEE SERVICES LIMITED
THE NEWS BUILDING, LEVEL 6, 3 LONDON BRIDGE STREET, LONDON, SE1 9SG, UNITED KINGDOM
Covered Properties
(37)
Direct Fill Chamber
Application:
19/351,998 →
Publication:
US 2026/0036708
Annihilator Based Wave Inversion
Declination Compensation for Seismic Survey
Marine Seismic Surveying with Towed Components Below Water's Surface
Integrated Passive and Active Seismic Surveying Using Multiple Arrays
Marine Seismic Surveying with Towed Components Below Water Surface
Methods and Systems for Conducting Reconnaissance Marine Seismic Surveys
Marine Seismic Surveying in Icy or Obstructed Waters
Seismic Data Acquisition with Varying Relative Distance Between Multiple Seismic Vessels
Marine Seismic Surveying with Towed Components Below Water's Surface
Noise Removal in Non-Uniformly Spaced Seismic Receiver Arrays
Arctic Seismic Surveying Operations
Real-Time Infill in Marine Seismic Surveys Using an Independent Seismic Source
Integrated Passive and Active Seismic Surveying Using Multiple Arrays
Sensor System of Buried Seismic Array
Dynamic Gain Adjustments in Seismic Surveys
Unmanned Marine Vessel for Seismic Sources
Ocean Bottom Seismic Systems
Marine Seismic Surveying in Icy or Obstructed Waters
Method and Apparatus for Seismic Noise Reduction
Methods and Systems for Using Known Source Events in Seismic Data Processing
Marine Seismic Surveying with Towed Components Below Water's Surface
Multi-Axis, Single Mass Accelerometer
System and Method for Reconstructed Wavefield Inversion
Reconnaissance Marine Seismic Surveys Having Reduced Density of Sail Lines
Seismic Data Acquisition with Varying Distance Between Seismic Vessels
Amplitude Compensation of Reverse Time Migration (Rtm) Gathers for Avo/Ava Analysis
Marine Vessel for Seismic Sources
Multi-Axis, Single Mass Accelerometer
Sparse Seismic Data Acquisition
Multi-Axis, Single Mass Accelerometer
Direct Fill Chamber
Seismic Source Apparatus
System and Method for Reconstructed Wavefield Imaging
Marine Seismic Surveying in Icy or Obstructed Waters
Traveling Ocean Bottom Seismic Survey
Multi-Axis, Single Mass Accelerometer
Related Assignments
(23)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Jun 30, 2010
From: VASCONCELOS, IVAN
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 024615/0088 →
Assignment of Assignor's Interest
Nov 7, 2011
From: ROBERTS, PHILLIP; FISCHER, ROBERT; ZINN, NOEL; SCHNEIDER, CURT
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 027183/0762 →
Assignment of Assignor's Interest
Mar 11, 2013
From: GAGLIARDI, JOSEPH R.; RICE, SHAWN; DUDLEY, TIMOTHY A.; SCHNEIDER, CURT
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 029963/0986 →
Assignment of Assignor's Interest
May 6, 2013
From: HOFLAND, GREGG S.; LEVEILLE, JACQUES P.; KAHN, DANIEL S.; FABER, KEES
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 030357/0964 →
Assignment of Assignor's Interest
May 6, 2013
From: HOFLAND, GREGG S.; LEVEILLE, JACQUES P.; KAHN, DANIEL S.; FABER, KEES
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 030357/0855 →
Assignment of Assignor's Interest
Jul 24, 2014
From: SCHNEIDER, CURT; DUDLEY, TIMOTHY A.
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 033383/0516 →
Assignment of Assignor's Interest
Jul 24, 2014
From: SCHNEIDER, CURT; DUDLEY, TIMOTHY A.
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 033383/0441 →
Security Agreement
Aug 22, 2014
From: ION GEOPHYSICAL CORPORATION; I/O MARINE SYSTEMS, INC.; GX TECHNOLOGY CORPORATION; ION EXPLORATION PRODUCTS (U.S.A.), INC.
To: PNC BANK, NATIONAL ASSOCIATION, AS AGENT
Reel/Frame 033598/0088 →
Security Agreement
Nov 4, 2014
From: ION GEOPHYSICAL CORPORATION; I/O MARINE SYSTEMS, INC.; GX TECHNOLOGY CORPORATION; ION EXPLORATION PRODUCTS (U.S.A.), INC.
To: U. S. BANK NATIONAL ASSOCIATION, AS COLLATERAL AGENT
Reel/Frame 034181/0779 →
Assignment of Assignor's Interest
Nov 3, 2015
From: BROOKES, DAVID; BERNITSAS, NIKOLAOS; FARMER, PAUL
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 036946/0283 →
Assignment of Assignor's Interest
Jan 25, 2016
From: FABER, KEES; LAROO, RICK
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 037576/0053 →
Assignment of Assignor's Interest
Dec 19, 2016
From: GAGLIARDI, JOSEPH R.; RICE, SHAWN; SCHNEIDER, CURT; DUDLEY, TIM
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 040674/0171 →
Assignment of Assignor's Interest
Feb 10, 2017
From: GAGLIARDI, JOSEPH; RICE, SHAWN; SCHNEIDER, CURT; CUNKELMAN, JEFFREY W.
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 041230/0023 →
Assignment of Assignor's Interest
Mar 17, 2017
From: LEVEILLE, JACQUES PIERRE; BRETTWOOD, PAUL; MEREDITH, JEFFREY ALAN
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 041609/0216 →
Assignment of Assignor's Interest
Apr 4, 2017
From: BERNITSAS, NIKOLAOS; CALDERON, CARLOS; RIDYARD, DAVID; BROOKES, DAVID JAMES
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 041849/0371 →
Assignment of Assignor's Interest
Apr 11, 2017
From: BERNITSAS, NIKOLAOS; BROOKES, DAVID JAMES; RIDYARD, DAVID; ALLINSON, DOUGLAS F.
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 041960/0243 →
Assignment of Assignor's Interest
Jun 27, 2017
From: DUDLEY, TIMOTHY A.; SCHNEIDER, CURT
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 042822/0406 →
Assignment of Assignor's Interest
Dec 6, 2017
From: CUNKELMAN, JEFFREY W
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 044318/0139 →
Assignment of Assignor's Interest
Sep 27, 2022
From: ION GEOPHYSICAL CORPORATION; GX TECHNOLOGY CORPORATION; GX GEOSCIENCE CORPORATION S. DE R.L. DE C.V.; GX TECHNOLOGY IMAGING SERVICES LIMITED
To: TGS-NOPEC GEOPHYSICAL COMPANY
Reel/Frame 061228/0057 →
Assignment of Assignor's Interest
Aug 3, 2023
From: WILMINGTON SAVINGS FUND SOCIETY, FSP, SOLELY IN ITS CAPACITY AS PLAN ADMINISTRATOR FOR ION GEOPHYSICAL CORPORATION
To: TGS-NOPEC GEOPHYSICAL COMPANY
Reel/Frame 064489/0868 →
Security Interest
Jun 3, 2024
From: TGS-NOPEC GEOPHYSICAL COMPANY
To: DANSKE BANK A/S
Reel/Frame 067600/0001 →
Assignment of Assignor's Interest
Oct 7, 2025
From: BURCH, DARRELL; VERISSIMO, EMERSON JOSE; DUDLEY, TIMOTHY
To: ION GEOPHYSICAL CORPORATION
Reel/Frame 072498/0097 →
Assignment of Assignor's Interest
Oct 7, 2025
From: ION GEOPHYSICAL CORPORATION
To: TGS-NOPEC GEOPHYSICAL COMPANY
Reel/Frame 072498/0393 →