E01B 3/36
Composite sleepers
E01B3/36 (Composite sleepers) appears on 23 US grants and 13 published applications in this corpus.
Search patents in E01B- Granted patents
- 23
- Published applications
- 13
- Assignees
- 21
- Inventors
- 44
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Nonwoven fabric-integrated sleeper pad using rubber pad embedded with stiffener and methods of manufacturing and constructing the same22 Sep 2026US 12,742,294 B2Korea Railroad Research Institute
- Polymeric composite, product with polymer composite, dry process for preparing polymer composite, process for preparing a sleeper5 May 2026US 12,617,722 B2Sileto Technologies LLC
- Shell cross-member system and railway section including such a system17 Mar 2020US 10,590,609 B2Alstom Transport Technologies
- Composite railway sleeper17 Mar 2020US 10,590,610 B2Greenrail Group S.R.L.
- Railway sleeper composed of fibre-reinforced stoneware12 Jun 2018US 9,995,006 B2
- Under sleeper pad16 Jul 2026US 2026/0201653 A1Getzner Werkstoffe Holding GmbH
- Polymeric Composite, Product with Polymer Composite, Dry Process for Preparing Polymer Composite, Process for Preparing a Sleeper14 Aug 2025US 2025/0257009 A1Sileto Technologies LLC
- Nonwoven fabric-integrated sleeper pad using rubber pad embedded with stiffener and methods of manufacturing and constructing the same23 Nov 2023US 2023/0374736 A1Korea Railroad Research Institute
- Rubberized asphalt coatings for ballasted track and related systems and methods10 Nov 2022US 2022/0356371 A1Trammco, LLC
- Rail tie pad16 Apr 2020US 2020/0115858 A1
Most cited
By later US patents
- Composite railway tie and method of manufacture thereof26US 5,609,295 AGreen Track Inc. · 1997
- Synthetic railroad crosstie23US 4,083,491 AThe Dow Chemical Company · 1978
- Resilient coat for tie of direct-connection type track15US 4,652,495 AJapanese National Railways · 1987
- Composite load bearing structure14US 5,722,589 AGreen Track Inc. · 1998
- Rail-tie fastening assembly10US 4,874,128 AKerr-McGee Chemical Corporation · 1989