E21D 9/122
Working or loading platforms
Official title: {Working or loading platforms (underground transport E21F13/00)}
E21D9/122 (Working or loading platforms) appears on 1 US grants and 4 published applications in this corpus.
Search patents in E21D- Granted patents
- 1
- Published applications
- 4
- Assignees
- 3
- Inventors
- 6
- Latest grant
- 8 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Tunnel construction method and machine9 Apr 2026US 2026/0098474 A1MACCAFERRI TUNNELING S.r.l.
- Rebar carriage for the construction of concrete structures3 Jul 2025US 2025/0215707 A1Grupo Empresarial Tecozam SL
- Tunneling Device for Pipe Jacking and Its Construction Method19 Dec 2019US 2019/0383142 A1
- Mining machine gathering head26 May 2016US 2016/0146006 A1Sandvik Intellectual Property AB
Most cited
By later US patents
No patent in this class has been cited by a later US patent yet.