Class E01B : PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
Subclass 3/30: Transverse or longitudinal sleepers (for switches or crossings E01B 7/22); Other means resting directly on the ballastway for supporting rails made from concrete or from natural or artificial stone (manufacture B28) Hollow sleepers
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 10435849 | Modular system for the laying of underground and railroad and tram lines | Feb 10, 15 | Oct 08, 19 | Not available |
| 10138604 | Rail tie having embedded automatic differential settlement compensation apparatus using oil pressure for railroad tracks | Dec 04, 14 | Nov 27, 18 | KOREA RAILROAD RESEARCH INSTITUTE |
| 9995006 | Railway sleeper composed of fibre-reinforced stoneware | Dec 03, 13 | Jun 12, 18 | Not available |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0229,363 | Hollow sleeper | Oct 19, 23 | Jul 11, 24 | SCHWIHAG AG |
| 2024/0133,124 | Hollow sleeper | Oct 18, 23 | Apr 25, 24 | SCHWIHAG AG |
| 2023/0250,592 | RAILROAD SLEEPER AND PROCESS FOR MANUFACTURING A RAILROAD SLEEPER | Apr 13, 23 | Aug 10, 23 | BRASKEM S.A. |
| 2021/0180,261 | Railroad sleeper and process for manufacturing a railroad sleeper | Jun 03, 20 | Jun 17, 21 | BRASKEM SA |
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