- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/36 - Nitrogen dioxide (NO2, N2O4)
Patent holdings for IPC class C01B 21/36
Total number of patents in this class: 33
10-year publication summary
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2
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3
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2
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3
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3
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4
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2
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2
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2
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4
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vero Biotech Inc. | 76 |
3 |
| Ascend Performance Materials Operations LLC | 276 |
2 |
| Casale SA | 627 |
2 |
| Deepak Nitrite Limited | 25 |
2 |
| DeNA Co., Ltd. | 170 |
2 |
| Noxilizer, Inc. | 23 |
2 |
| Selective Micro Technologies, LLC | 13 |
2 |
| SunCoke Technology and Development LLC | 240 |
2 |
| Weiler Engineering, Inc. | 31 |
2 |
| GM Global Technology Operations LLC | 15310 |
1 |
| Massachusetts Institute of Technology | 10129 |
1 |
| Kemin Industries, Inc. | 364 |
1 |
| Saian Corporation | 5 |
1 |
| Southwest Research Institute | 738 |
1 |
| ThyssenKrupp Uhde GmbH | 339 |
1 |
| Universidade Estadual de Campinas - Unicamp | 278 |
1 |
| Universitat Heidelberg | 268 |
1 |
| Universiteit Maastricht | 233 |
1 |
| The University of Liverpool | 312 |
1 |
| Yara International ASA | 858 |
1 |
| Other owners | 3 |