B61F 3/12
Types of bogies: specially modified for carrying adjacent vehicle bodies of articulated
Official title: specially modified for carrying adjacent vehicle bodies of articulated trains
B61F3/12 (Types of bogies: specially modified for carrying adjacent vehicle bodies of articulated) appears on 101 US grants and 38 published applications in this corpus.
Search patents in B61F- Granted patents
- 101
- Published applications
- 38
- Assignees
- 66
- Inventors
- 149
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 3 |
| 2004 | 1 | 2 |
| 2005 | 1 | 1 |
| 2006 | 1 | 4 |
| 2007 | 3 | 2 |
| 2008 | 1 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 3 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 0 |
| 2016 | 1 | 3 |
| 2017 | 1 | 6 |
| 2018 | 2 | 3 |
| 2019 | 5 | 0 |
| 2020 | 3 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-unit railroad car and railroad car trucks therefor10 Mar 2026US 12,570,334 B2National Steel Car Limited
- Chain of semi-trailer vehicles and associated articulated trainset10 Mar 2026US 12,570,335 B2ALSTOM Holdings
- Articulated rail-transport car2 Jan 2024US 11,858,541 B2Herzog Railroad Services, Inc.
- Railgear and automatic mechanical lock for railgear23 May 2023US 11,654,735 B2Diversified Metal Fabricators, Inc.
- Rail transport system19 Apr 2022US 11,305,791 B2BYD Company Limited
- Multi-unit railroad car and railroad car trucks therefor11 Jun 2026US 2026/0159140 A1National Steel Car Limited
- Multi-unit railroad car and railroad car trucks therefor28 Mar 2024US 2024/0101167 A1National Steel Car Limited
- Chain of semi-trailer vehicles and associated articulated trainset5 Jan 2023US 2023/0001962 A1ALSTOM Holdings
- Railgear and automatic mechanical lock for railgear4 Mar 2021US 2021/0061035 A1Diversified Metal Fabricators, Inc.
- Articulated rail-transport car24 Sep 2020US 2020/0298893 A1Herzog Railroad Services, Inc.
Most cited
By later US patents
- Railway container and car100US 4,478,155 AThe Atchison, Topeka and Santa Fe Railway Company · 1984
- Articulated lightweight piggyback railcar65US 4,751,882 ACanadian National Railway Company · 1988
- Railroad car sill-articulating device member connection55US 4,336,758 AAMSTED Industries Incorporated · 1982
- Self-steering trucks with side bearings supporting the entire weight of the vehicle45US 5,174,218 ARailway Engineering Associates, Inc. · 1992
- Steering railway vehicle trucks40US 4,332,201 ABritish Railways Board · 1982