B61D 7/18
Pivoted
Official title: pivoted
B61D7/18 (Pivoted) appears on 79 US grants and 49 published applications in this corpus.
Search patents in B61D- Granted patents
- 79
- Published applications
- 49
- Assignees
- 38
- Inventors
- 138
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 5 | 1 |
| 2013 | 1 | 3 |
| 2014 | 2 | 5 |
| 2015 | 5 | 2 |
| 2016 | 0 | 2 |
| 2017 | 2 | 4 |
| 2018 | 3 | 6 |
| 2019 | 4 | 3 |
| 2020 | 5 | 6 |
| 2021 | 1 | 2 |
| 2022 | 0 | 2 |
| 2023 | 3 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Railroad hopper car with flow through structure25 Aug 2026US 12,715,484 B2National Steel Car Limited
- Hopper car outlet gate mechanical flap to prevent pellet loss4 Nov 2025US 12,459,547 B2Chevron Phillips Chemical Company LP
- Railroad car and end door assembly therefor12 Nov 2024US 12,139,178 B2National Steel Car Limited
- Longitudinal door operating mechanism1 Oct 2024US 12,103,571 B2Railcar Innovations, LLC
- Hopper railcar with door deflector for transverse pivoted outlet gate, door deflector and method of retrofitting hopper railcar to include door deflector for transverse pivoted outlet gate16 Apr 2024US 11,958,509 B2Jac Operations, Inc.
- Hopper car outlet gate mechanical flap to prevent pellet loss15 Jan 2026US 2026/0015017 A1Chevron Phillips Chemical Company LP
- Dump car having arced top and side gates29 May 2025US 2025/0171055 A1Nordic Minesteel Technologies Inc.
- Method of repurposing small cube covered hopper railcars and modified railcars formed thereby2 May 2024US 2024/0140497 A1
- Railroad hopper car with flow through structure14 Dec 2023US 2023/0399033 A1National Steel Car Limited
- Hopper railcar with door deflector for transverse pivoted outlet gate, door deflector and method of retrofitting hopper railcar to include door deflector for transverse pivoted outlet gate22 Jun 2023US 2023/0192156 A1Jac Operations, Inc.
Most cited
By later US patents
- Hopper car with lading dislodgement fittings and method of operation86US 7,921,783 B2National Steel Car Limited · 2011
- Operating system for railroad hopper car gate assembly doors52US 4,601,244 AMiner Enterprises, Inc. · 1986
- Actuating and locking means for the hopper doors of a railroad hopper car34US 4,366,757 AOrtner Freight Car Company · 1983
- High volume covered hopper car with loading from below and automatic unloading29US 4,677,917 AACF Industries, Incorporated · 1987
- Motor actuated railway hopper car door mechanism27US 3,949,681 APullman Incorporated · 1976