| 2025/0116,071 | PREFABRICATED WIRE MESH ASSEMBLY FOR BALLAST AND METHOD OF CONSTRUCTING GRAVEL-BALLASTED TRACK USING THE SAME | Oct 08, 24 | Apr 10, 25 | KOREA RAILROAD RESEARCH INSTITUTE |
| 2025/0034,818 | GEOENGINEERING CONSTRUCTIONS FOR USE IN RAILWAYS | Sep 17, 24 | Jan 30, 25 | Tensar Technologies Limited |
| 2024/0229,364 | PROCESS AND SYSTEM FOR LAYING TRACKS FOR UNDERGROUND, RAILWAY AND TRAMWAY LINES | Mar 05, 21 | Jul 11, 24 | OVERAIL S.R.L. |
| 2024/0133,125 | PROCESS AND SYSTEM FOR LAYING TRACKS FOR UNDERGROUND, RAILWAY AND TRAMWAY LINES | Mar 05, 21 | Apr 25, 24 | OVERAIL S.R.L. |
| 2024/0084,514 | RAIL SUPPORT ARRANGEMENT | Jan 12, 22 | Mar 14, 24 | Not available |
| 2024/0084,515 | METHOD OF INSTALLING A RAIL SUPPORT ARRANGEMENT | Jan 12, 22 | Mar 14, 24 | Not available |
| 2024/0044,087 | APPARATUS AND METHOD FOR APPLYING SINGLE-COMPONENT OR MULTI-COMPONENT ADHESIVE TO A BALLAST BED AND USE | Dec 14, 21 | Feb 08, 24 | Hürlimann Railtec AG |
| 2022/0356,653 | BALLASTED TRACK SYSTEMS WITH RUBBERIZED ASPHALT COATINGS AND RELATED METHODS | May 10, 22 | Nov 10, 22 | Not available |
| 2022/0145,545 | Shear Resistant Drain System for Improving Weak Foundation Soils | Nov 08, 21 | May 12, 22 | Not available |
| 2021/0332,532 | TURNOUT ARRANGEMENT WITH ELASTICALLY SUPPORTED TURNOUT BASES | Sep 06, 19 | Oct 28, 21 | PORR Bau GmbH |
| 2020/0131,711 | SLEEPER FASTENING SYSTEM ON A BALLASTLESS TRACK | Mar 13, 17 | Apr 30, 20 | ACCIONA CONSTRUCCIÓN, S.A.; Systra; INGENIERÍA Y ECONOMÍA DEL TRANSPORTE S.M.E. M.P., S.A.; CENTRO DE ESTUDIOS MATERIALES Y CONTROL DE OBRA, S.A; |
| 2020/0115,856 | TRACK BED AND METHOD OF STABILIZING A TRACK BED | Apr 05, 18 | Apr 16, 20 | Not available |
| 2019/0345,675 | VIBRATION DAMPENING RAILWAY TIE BOOT | May 10, 19 | Nov 14, 19 | Press-Seal Corporation |
| 2018/0148,896 | SUPPORT FOR A PANEL OF A SECTION OF GUIDED TRANSPORT TRACK | May 27, 16 | May 31, 18 | Not available |
| 2018/0016,751 | FORWORK SEGMENT | Jan 30, 15 | Jan 18, 18 | ACCIONA INFRAESTRUCTURAS, S.A. |
| 2017/0284,031 | Subgrade Peat Stabilisation System for Railway | Feb 08, 17 | Oct 05, 17 | TBT ENGINEERING LIMITED |
| 2017/0260,697 | SLEEPER BLOCK UNIT FOR RAILWAY TRACK SYSTEMS | Jan 11, 16 | Sep 14, 17 | SONNEVILLE AG |
| 2017/0211,238 | Load Supporting and Insulating Apparatuses for Rails | Jan 24, 17 | Jul 27, 17 | PRECISION RAIL AND MFG., INC. |
| 2016/0348,321 | METHOD AND SYSTEM FOR CONCRETING RAILWAY SLAB TRACK | May 26, 16 | Dec 01, 16 | Tecsa Empresa Constructora, S.A. |
| 2016/0017,544 | SLEEPER BLOCK UNIT FOR RAILWAY TRACK SYSTEMS | Mar 07, 14 | Jan 21, 16 | SONNEVILLE AG |