B61D 3/06
Flat-bottomed cars convertible into hoppers
B61D3/06 (Flat-bottomed cars convertible into hoppers) appears on 5 US grants and 8 published applications in this corpus.
Search patents in B61D- Granted patents
- 5
- Published applications
- 8
- Assignees
- 5
- Inventors
- 11
- Latest grant
- 17 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 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 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 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 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 6 |
| 2024 | 2 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Open top gondola railcars17 Dec 2024US 12,168,466 B2Gunderson LLC
- Railroad energy delivery system30 Apr 2024US 11,970,192 B2SunTrain, Inc.
- Longitudinal sliding gate for hopper car10 Aug 2021US 11,084,508 B2Trinity Industries, Inc.
- Convertible freight car5 Feb 1985US 4,497,259 A
- Convertible railway hopper car27 Nov 1984US 4,484,527 AACF Industries, Incorporated
- Convertible cargo handling assembly for managing varied cargo types1 Jan 2026US 2026/0001709 A1Ancra International LLC
- Railroad energy delivery system6 Apr 2023US 2023/0103923 A1SunTrain, Inc.
- Railroad energy delivery system6 Apr 2023US 2023/0105841 A1SunTrain, Inc.
- Railroad energy delivery system6 Apr 2023US 2023/0106281 A1SunTrain, Inc.
- Railroad energy delivery system6 Apr 2023US 2023/0106707 A1SunTrain, Inc.
Most cited
By later US patents