- 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: 31
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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2
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Ascend Performance Materials Operations LLC | 273 |
2 |
| Casale SA | 613 |
2 |
| Deepak Nitrite Limited | 25 |
2 |
| DeNA Co., Ltd. | 170 |
2 |
| Noxilizer, Inc. | 23 |
2 |
| Selective Micro Technologies, LLC | 14 |
2 |
| SunCoke Technology and Development LLC | 238 |
2 |
| Weiler Engineering, Inc. | 30 |
2 |
| Vero Biotech Inc. | 70 |
2 |
| GM Global Technology Operations LLC | 15095 |
1 |
| Kemin Industries, Inc. | 356 |
1 |
| Saian Corporation | 5 |
1 |
| Southwest Research Institute | 752 |
1 |
| ThyssenKrupp Uhde GmbH | 332 |
1 |
| Universidade Estadual de Campinas - Unicamp | 274 |
1 |
| Universitat Heidelberg | 259 |
1 |
| Universiteit Maastricht | 227 |
1 |
| The University of Liverpool | 304 |
1 |
| Yara International ASA | 866 |
1 |
| Cryo PUR | 20 |
1 |
| Other owners | 2 |