B61D 7/12
The hoppers being movable
Official title: the hoppers being movable (B61D9/00 takes precedence)
B61D7/12 (The hoppers being movable) appears on 6 US grants and 7 published applications in this corpus.
Search patents in B61D- Granted patents
- 6
- Published applications
- 7
- Assignees
- 6
- Inventors
- 25
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2017 | 0 | 3 |
| 2018 | 1 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Covered hopper railcar10 Mar 2026US 12,570,333 B2Jac Operations, Inc.
- Cab roof structure, cab and rail train7 Nov 2023US 11,807,281 B2Crrc Qingdao Sifang Co., Ltd.
- Aggregate train and methods of loading and unloading21 Jul 2020US 10,717,451 B2Georgetown Rail Equipment Company
- Engineering vehicle having ballast unloading device and ballast leveling device10 Dec 2019US 10,501,096 B2Crrc Yangtze Co., Ltd.
- Aggregate train and methods of loading and unloading14 May 2019US 10,286,929 B2Georgetown Rail Equipment Company
- Covered hopper railcar16 Jul 2026US 2026/0200506 A1
- Covered hopper railcar24 Nov 2022US 2022/0371628 A1Jac Operations, Inc.
- Cab roof structure, cab and rail train30 Sep 2021US 2021/0300443 A1Crrc Qingdao Sifang Co., Ltd.
- Aggregate train and methods of loading and unloading25 Jul 2019US 2019/0225242 A1Georgetown Rail Equipment Company
- Aggregate train and methods of loading and unloading14 Dec 2017US 2017/0355385 A1Georgetown Rail Equipment Company
Most cited
By later US patents