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| 9594173 | Method and system for augmenting frequency range of conventional marine seismic source with low-frequency | Jan 27, 14 | Mar 14, 17 | CGG SERVICES SA, CGG SERVICES SAS, |
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| 9110184 | Devices for exciting seismic vibrations | Apr 16, 14 | Aug 18, 15 | IMPULSSEIS |
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| 8837259 | Source for marine seismic acquisition and method | Mar 08, 12 | Sep 16, 14 | CGG SERVICES SAS |
| 8830794 | Source for marine seismic acquisition and method | Nov 28, 12 | Sep 09, 14 | CGGVERITAS SERVICES SA |