E01B 7/22
Special sleepers for switches or crossings
Official title: Special sleepers for switches or crossings; Fastening means therefor
E01B7/22 (Special sleepers for switches or crossings) appears on 44 US grants and 39 published applications in this corpus.
Search patents in E01B- Granted patents
- 44
- Published applications
- 39
- Assignees
- 41
- Inventors
- 101
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 2 |
| 2004 | 3 | 3 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 2 | 3 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 2 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 2 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 3 |
| 2021 | 1 | 3 |
| 2022 | 4 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Modular fastening for track crossings19 Aug 2025US 12,392,091 B2Pandrol Iberica S.A.U.
- Turnout arrangement with elastically supported turnout bases18 Mar 2025US 12,252,847 B2PORR Bau GmbH
- Modular fastening for railway crossings18 Jun 2024US 12,012,700 B2Pandrol Iberica S.A.U.
- Switch device15 Nov 2022US 11,499,271 B2Voestalpine Bwg GmbH & Co. KG
- Switch30 Aug 2022US 11,427,970 B2Getzner Werkstoffe Holding GmbH
- Hollow Switch Tie Assembly for Railway16 Oct 2025US 2025/0320669 A1voestalpine Railway Systems Nortrak LLC
- Turnout for a track system22 May 2025US 2025/0163652 A1Getzner Werkstoffe Holding GmbH
- Assembly comprising at least one rail and a support11 Jul 2024US 2024/0229365 A1Vossloh Cogifer
- Arrangement for holding down a rail30 Nov 2023US 2023/0383473 A1Voestalpine Railway Systems GmbH
- Modular fastening for track crossings14 Jul 2022US 2022/0220672 A1Pandrol Iberica S.A.U.
Most cited
By later US patents
- Plate for supporting railway rails and a track assembly using it16US 4,756,477 APandrol Limited · 1988
- Hollow tie switch assembly11US 6,158,698 AVAE Nortrak North America, Inc. · 2000
- Cross-ties for railroad track systems8US 5,562,267 ASchwihag AG · 1996
- Multiple section special trackwork fastener7US 5,249,743 ALord Corporation · 1993
- Rail controller mounting apparatus7US 8,480,008 B12013