E01B 2204/07
Drainage
E01B2204/07 (Drainage) appears on 16 US grants and 10 published applications in this corpus.
Search patents in E01B- Granted patents
- 16
- Published applications
- 10
- Assignees
- 6
- Inventors
- 16
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 2 |
| 2018 | 2 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for waterproofing railway structures22 Sep 2026US 12,742,295 B2Freedom Chemical Corporation
- Integrated ballast mat7 Apr 2020US 10,612,198 B2Versaflex, Inc.
- Ballast mats and methods of forming the same17 Sep 2019US 10,415,197 B2Versaflex, Inc.
- Method for waterproofing railway bridges and waterproofing material for carrying out said method8 Jan 2019US 10,174,462 B2
- Integrated ballast mat20 Nov 2018US 10,132,049 B2Versaflex, Inc.
- System and method for waterproofing railway structures21 May 2026US 2026/0139443 A1Freedom Chemical Corporation
- Track17 Jul 2025US 2025/0230611 A1Tdi Greenway Technologies Ltd.
- Ballasted track systems with rubberized asphalt coatings and related methods10 Nov 2022US 2022/0356653 A1Trammco, LLC
- Integrated ballast mat25 Jul 2019US 2019/0226163 A1Versaflex, Inc.
- Ballast mats and methods of forming the same17 May 2018US 2018/0135260 A1Versaflex, Inc.
Most cited
By later US patents
- Containment reservoir and method27US 4,296,884 ATrue Temper Corporation · 1981
- Variable thickness fabric mat for railway track structure and method26US 4,311,273 ATrue Temper Corporation · 1982
- Sheet useful as a reservoir liner20US 4,388,357 ATrue Temper Corporation · 1983
- Method of providing a containment reservoir15US 4,406,403 ATrue Temper Corporation · 1983
- Modular liquid collection system for railroad roadbeds14US 4,010,896 A1977