- 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: 141
10-year publication summary
|
6
|
10
|
11
|
13
|
7
|
15
|
10
|
21
|
18
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Third Pole, Inc. | 54 |
12 |
| The General Hospital Corporation | 4796 |
8 |
| N2 Applied AS | 12 |
7 |
| NitricGen, Inc. | 9 |
7 |
| Korea Institute of Fusion Energy | 82 |
7 |
| Vero Biotech Inc. | 76 |
4 |
| Universiteit Antwerpen | 401 |
3 |
| Nitrocapt AB | 13 |
3 |
| BASF SE | 21146 |
2 |
| Toyota Motor Corporation | 33999 |
2 |
| Chevron U.S.A. Inc. | 4050 |
2 |
| W. L. Gore & Associates, Inc. | 2716 |
2 |
| Altmerge, LLC | 9 |
2 |
| C-Tech Innovation Limited | 19 |
2 |
| Ilika Technologies Ltd | 69 |
2 |
| Korea Institute of Machinery & Materials | 769 |
2 |
| N/C Quest, Inc. | 22 |
2 |
| ThyssenKrupp Uhde GmbH | 362 |
2 |
| Tohoku University | 2879 |
2 |
| The University of Liverpool | 310 |
2 |
| Other owners | 66 |