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| 9976574 | Dual bellows separator for high pressure applications | May 15, 14 | May 22, 18 | TECHNETICS GROUP, LLC |
| 9969482 | Device for assisting the operation of an aircraft door | Oct 17, 13 | May 15, 18 | Ratier-Figeac |
| 9945393 | Pressure accumulator | Oct 18, 12 | Apr 17, 18 | Hydac Technology GmbH |
| 9945396 | Fluid systems for machines with integrated energy recovery circuit | Feb 23, 16 | Apr 17, 18 | Caterpillar Inc. |
| 9932993 | System and method for hydraulic energy recovery | Nov 09, 15 | Apr 03, 18 | Caterpillar Inc. |
| 9926751 | Enhanced ram-style riser tensioner | Nov 19, 15 | Mar 27, 18 | Dril-Quip, Inc. |
| 9920775 | Distributed piston elastomeric accumulator | Feb 01, 16 | Mar 20, 18 | VANDERBILT UNIVERSITY |
| 9902467 | Wave power generation device and method for operating and maintaining the same | Aug 03, 16 | Feb 27, 18 | DALIAN UNIVERSITY OF TECHNOLOGY |
| 9903391 | System for storing potential energy and method for producing such a system | Aug 05, 11 | Feb 27, 18 | Heindl Energy GmbH |
| 9896068 | Energy recovery system | Apr 02, 15 | Feb 20, 18 | Eurekagen Limited |
| 9879403 | Hydraulic hybrid swing drive system for excavators | Aug 08, 14 | Jan 30, 18 | PARKER-HANNIFIN CORPORATION |
| 9879700 | Robotic hydraulic system | Oct 09, 14 | Jan 30, 18 | BOSTON DYNAMICS, INC. |
| 9869079 | Accumulator for water management | Jun 05, 15 | Jan 16, 18 | MAG AEROSPACE INDUSTRIES, LLC |
| 9869291 | System and method for storing energy | Aug 21, 14 | Jan 16, 18 | GRAVITY POWER LLC |
| 9856889 | Propellant driven accumulator | Jun 04, 14 | Jan 02, 18 | SHELL OIL COMPANY |
| 9835151 | Hydraulic device, in particular low-pressure accumulator with a closure element | Oct 18, 11 | Dec 05, 17 | ROBERT BOSCH GMBH |
| 9835177 | Self-contained depth compensated accumulator system | Apr 03, 15 | Dec 05, 17 | Not available |
| 9829013 | Hydraulic system for construction machine | Mar 13, 14 | Nov 28, 17 | DOOSAN INFRACORE CO., LTD. |
| 9822802 | Accumulator membrane for a hydraulic hammer | Aug 31, 15 | Nov 21, 17 | CATERPILLAR INC. |