E01B 27/02
Placing the ballast
Official title: Placing the ballast; Making ballastway; Redistributing ballasting material; Machines or devices therefor; Levelling means
E01B27/02 (Placing the ballast) appears on 148 US grants and 68 published applications in this corpus.
Search patents in E01B- Granted patents
- 148
- Published applications
- 68
- Assignees
- 74
- Inventors
- 173
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 9 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 1 |
| 2002 | 1 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 4 | 4 |
| 2015 | 3 | 2 |
| 2016 | 2 | 6 |
| 2017 | 3 | 7 |
| 2018 | 7 | 6 |
| 2019 | 5 | 4 |
| 2020 | 5 | 4 |
| 2021 | 0 | 5 |
| 2022 | 4 | 4 |
| 2023 | 1 | 6 |
| 2024 | 6 | 0 |
| 2025 | 7 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Railway works machine comprising a machine chassis and a works shuttle, and associated railway works convoy3 Feb 2026US 12,540,442 B2Matisa Materiel ndustriel S.A.
- Shear resistant drain system for improving weak foundation soils25 Nov 2025US 12,480,260 B2TBT Engineering Limited
- Track maintenance machine with a conveyor or excavating chain arrangement11 Nov 2025US 12,467,208 B2Plasser & Theurer Export Von Bahnbaumaschinen Gesellschaft M. B. H.
- Auto stow wings7 Oct 2025US 12,435,474 B2Progress Rail Services Corporation
- Transfer car for sleepers and the associated railway vehicle24 Jun 2025US 12,338,582 B2Matisa Materiel Industriel S.A.
- Extruded Ballast Protection for Waterproofing3 Jul 2025US 2025/0215254 A1GCP Applied Technologies Inc.
- Prefabricated wire mesh assembly for ballast and method of constructing gravel-ballasted track using the same10 Apr 2025US 2025/0116071 A1Korea Railroad Research Institute
- Method, apparatus and system for lifting railroad structures13 Mar 2025US 2025/0084593 A1Enerpac Tool Group Corp.
- Geoengineering constructions for use in railways30 Jan 2025US 2025/0034818 A1Tensar Technologies Limited
- Method, Apparatus and System for Lifting Railroad Structures19 Oct 2023US 2023/0332359 A1Enerpac Tool Group Corp.
Most cited
By later US patents
- Railroad material cart98US 6,155,175 AERS Industries, Inc. · 2000
- Ballast distribution, regulation and reclaiming railroad maintenance device34US 5,284,097 ALoram Maintenance of Way, Inc. · 1994
- Mobile machine for receiving and distributing track ballast28US 5,094,018 AFranz Plasser Bahnbaumaschinen-Industriegesellschaft m. b. H. · 1992
- Self-unloading train for bulk commodities27US 4,925,356 A1990
- GPS controlled multiple source material application26US 6,526,339 B1Herzog Contracting Corp. · 2003