- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/22 - Nitrous oxide (N2O)
Patent holdings for IPC class C01B 21/22
Total number of patents in this class: 36
10-year publication summary
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1
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2
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3
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0
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1
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2
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3
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1
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4
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 20915 |
5 |
| Robert Bosch GmbH | 42684 |
2 |
| Showa Denko K.K. | 2226 |
2 |
| Kemira Oyj | 1205 |
2 |
| Linde Aktiengesellschaft | 1502 |
2 |
| Conopco, Inc. | 5032 |
1 |
| The Regents of the University of California | 19929 |
1 |
| Advansix Resins & Chemicals LLC | 299 |
1 |
| Altmerge, LLC | 9 |
1 |
| Casale SA | 611 |
1 |
| Cook Regentec LLC | 22 |
1 |
| Enox Biopharma, Inc | 3 |
1 |
| Geno LLC | 22 |
1 |
| Korea Research Institute of Chemical Technology | 1390 |
1 |
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3985 |
1 |
| Meggitt (UK) Limited | 5 |
1 |
| Mitsubishi Gas Chemical Company, Inc. | 3465 |
1 |
| SAES Getters S.p.A. | 319 |
1 |
| Sumitomo Seika Chemicals Co., Ltd. | 1045 |
1 |
| Thomas Finke | 1 |
1 |
| Other owners | 8 |