B61D 7/32
Means for assisting charge or discharge
B61D7/32 (Means for assisting charge or discharge) appears on 66 US grants and 55 published applications in this corpus.
Search patents in B61D- Granted patents
- 66
- Published applications
- 55
- Assignees
- 45
- Inventors
- 123
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 3 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 3 | 3 |
| 2012 | 2 | 2 |
| 2013 | 4 | 0 |
| 2014 | 0 | 4 |
| 2015 | 1 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 3 |
| 2018 | 5 | 2 |
| 2019 | 4 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 5 |
| 2023 | 1 | 2 |
| 2024 | 3 | 0 |
| 2025 | 6 | 11 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Covered hopper railcar10 Mar 2026US 12,570,333 B2Jac Operations, Inc.
- End cap for vacuum discharge outlet gate and method13 Jan 2026US 12,522,257 B2A. Stucki Company
- Use of residual iron within granulated metallic unit production facilities, and associated systems, devices, and methods11 Nov 2025US 12,465,973 B2Suncoke Technology and Development LLC
- Continuous granulated metallic units production, and associated systems, devices, and methods30 Sep 2025US 12,427,569 B2Suncoke Technology and Development LLC
- Low-carbon granulated metallic units23 Sep 2025US 12,420,335 B2Suncoke Technology and Development LLC
- Covered hopper railcar16 Jul 2026US 2026/0200506 A1
- Low-sulfur granulated metallic units, and associated systems, devices, and methods14 May 2026US 2026/0131376 A1Suncoke Technology and Development LLC
- Treating cooling water in iron production facilities, and associated systems, devices, and methods26 Feb 2026US 2026/0054312 A1Suncoke Technology and Development LLC
- Low-carbon granulated metallic units, and associated systems, devices, and methods19 Feb 2026US 2026/0048434 A1Suncoke Technology and Development LLC
- Use of residual iron within granulated metallic unit production facilities, and associated systems, devices, and methods5 Feb 2026US 2026/0034581 A1Suncoke Technology and Development LLC
Most cited
By later US patents
- Hopper car with lading dislodgement fittings and method of operation86US 7,921,783 B2National Steel Car Limited · 2011
- Pneumatic unloading apparatus for bulk materials45US 4,993,883 ANabisco Brands, Inc. · 1991
- High volume covered hopper car with loading from below and automatic unloading29US 4,677,917 AACF Industries, Incorporated · 1987
- Railroad hopper car vent29US 4,896,590 APullman Leasing Company · 1990
- Railroad hopper car with self-contained discharge system25US 4,617,868 AMiner Enterprises, Inc. · 1986