E21F 1/085
Using compressed gas injectors
Official title: {using compressed gas injectors}
E21F1/085 (Using compressed gas injectors) appears on 0 US grants and 7 published applications in this corpus.
Search patents in E21F- Granted patents
- 0
- Published applications
- 7
- Assignees
- 4
- Inventors
- 15
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 5 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
No granted patents in this class yet.
- System and method for regulating non-energy-consuming complex environment in mine based on compressed air energy storage6 Aug 2026US 2026/0226832 A1China University of Geosciences (Wuhan)
- Hydraulic Gas Compressors and Applications Thereof28 Apr 2016US 2016/0115790 A1
- Method, apparatus, and system for providing controlled atmosphere in confined spaces3 Mar 2016US 2016/0059047 A1Chembio Shelter, Inc.
- Method and apparatus for providing refuge passageways3 Mar 2016US 2016/0060951 A1Chembio Shelter, Inc.
- Method and apparatus for providing controlled atmosphere in mobile mine refuges3 Mar 2016US 2016/0061033 A1Chembio Shelter, Inc.
Most cited
By later US patents
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