- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/20 - Nitrogen oxidesOxyacids of nitrogenSalts thereof
Patent holdings for IPC class C01B 21/20
Total number of patents in this class: 132
10-year publication summary
|
4
|
7
|
11
|
13
|
14
|
8
|
16
|
11
|
21
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Third Pole, Inc. | 56 |
11 |
| The General Hospital Corporation | 4720 |
8 |
| N2 Applied AS | 13 |
7 |
| NitricGen, Inc. | 9 |
7 |
| Korea Institute of Fusion Energy | 73 |
7 |
| Universiteit Antwerpen | 376 |
3 |
| Nitrocapt AB | 13 |
3 |
| Vero Biotech Inc. | 79 |
3 |
| BASF SE | 20904 |
2 |
| Toyota Motor Corporation | 31819 |
2 |
| Chevron U.S.A. Inc. | 3945 |
2 |
| Altmerge, LLC | 9 |
2 |
| Ascend Performance Materials Operations LLC | 272 |
2 |
| C-Tech Innovation Limited | 21 |
2 |
| Ilika Technologies Ltd | 69 |
2 |
| Korea Institute of Machinery & Materials | 746 |
2 |
| N/C Quest, Inc. | 23 |
2 |
| ThyssenKrupp Uhde GmbH | 330 |
2 |
| Tohoku University | 2775 |
2 |
| Soane Technologies, LLC | 2 |
2 |
| Other owners | 59 |