B61D 5/02
Tank wagons for carrying fluent materials: having more than one tank
Official title: having more than one tank
B61D5/02 (Tank wagons for carrying fluent materials: having more than one tank) appears on 17 US grants and 14 published applications in this corpus.
Search patents in B61D- Granted patents
- 17
- Published applications
- 14
- Assignees
- 10
- Inventors
- 28
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 4 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 3 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Storage assembly for railcar28 Apr 2026US 12,612,084 B2Trinity Rail Group, LLC
- Railroad car having multiple penetration resistant and protective structures6 May 2025US 12,291,246 B2Cngmotive, Inc.
- Internal nozzle for a tank car18 Feb 2025US 12,228,248 B2Trinity Tank Car, Inc.
- Manway relief for a tank car10 Sep 2024US 12,084,095 B2Trinity Tank Car, Inc.
- Railcar hatch cover10 Sep 2024US 12,084,096 B2Freightlucid, LLC
- Railroad car having multiple penetration resistant and protective structures14 May 2026US 2026/0131831 A1Hgmotive, Inc.
- Manway Relief for a Tank Car12 Dec 2024US 2024/0409132 A1Trinity Tank Car, Inc.
- Storage Assembly for Railcar14 Mar 2024US 2024/0083467 A1Trinity Rail Group, LLC
- Railroad car having multiple penetration resistant and protective structures10 Feb 2022US 2022/0041191 A1Cngmotive, Inc.
- Manway relief for a tank car22 Jul 2021US 2021/0221409 A1Trinity Tank Car, Inc.
Most cited
By later US patents
- Road and rail tankers43US 6,557,896 B12003
- Convertible freight car35US 4,497,259 A1985
- Tank car heating system22US 4,414,462 AGeneral American Transportation Corporation · 1983
- Railroad car conversion apparatus having adjustable framework for supporting material receiving bladders12US 5,402,732 ASEEC, Inc. · 1995
- Baffle for automatic outage9US 4,079,760 AGeneral American Transportation Corporation · 1978