B61D 45/004
Fixing semi-trailers
Official title: {Fixing semi-trailers (wagons for transporting semi-trailers B61D3/184)}
B61D45/004 (Fixing semi-trailers) appears on 76 US grants and 20 published applications in this corpus.
Search patents in B61D- Granted patents
- 76
- Published applications
- 20
- Assignees
- 28
- Inventors
- 74
- Latest grant
- 13 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 5 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 8 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 3 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 4 | 0 |
| 2017 | 1 | 1 |
| 2018 | 0 | 3 |
| 2019 | 2 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 2 | 3 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Electric rail vehicle13 May 2025US 12,296,866 B2Parallel Systems, Inc.
- Multi-modal freight systems, devices, and methods16 Jul 2024US 12,036,833 B2Avbj, LLC
- Electric rail vehicle10 Oct 2023US 11,780,476 B2
- Electric rail vehicle5 Sep 2023US 11,745,773 B2Parallel Systems, Inc.
- Electric rail vehicle13 Dec 2022US 11,524,709 B2Parallel Systems, Inc.
- Electric rail vehicle28 Aug 2025US 2025/0269882 A1Parallel Systems, Inc.
- Electric rail vehicle28 Dec 2023US 2023/0415793 A1Parallel Systems, Inc.
- Multi-modal freight systems, devices, and methods26 Oct 2023US 2023/0339274 A1Avbj, LLC
- Electric rail vehicle16 Feb 2023US 2023/0052871 A1Parallel Systems, Inc.
- Electric rail vehicle1 Dec 2022US 2022/0379933 A1Parallel Systems, Inc.
Most cited
By later US patents
- System for transporting semi-trailers on two interconnected vehicles46US 4,671,714 A1987
- Vehicle wheel chock for securing vehicles during transport45US 4,836,726 AThrall Car Manufacturing Company · 1989
- Railroad car with chock block apparatus for securing transported vehicles44US 4,668,140 AThrall Car Manufacturing Company · 1987
- Universal wheel restraining cleat and strap assembly for wheel chocks44US 5,011,347 AStandard Car Truck Company · 1991
- Fifth wheel plate42US 4,478,425 A1984