- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/087 - Compounds containing nitrogen and non-metals containing one or more hydrogen atoms
Patent holdings for IPC class C01B 21/087
Total number of patents in this class: 66
10-year publication summary
|
9
|
3
|
5
|
7
|
5
|
6
|
6
|
1
|
6
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude | 3975 |
12 |
| American Air Liquide, Inc. | 251 |
4 |
| Versum Materials US, LLC | 641 |
4 |
| Evonik Degussa GmbH | 1531 |
3 |
| Totalforsvarets Forskningsinstitut | 25 |
3 |
| Merck Patent GmbH | 5831 |
2 |
| Air Liquide Advanced Materials LLC | 9 |
2 |
| Casale SA | 609 |
2 |
| Expander Energy Inc. | 55 |
2 |
| Johnson Matthey Public Limited Company | 1850 |
2 |
| Linde GmbH | 1263 |
2 |
| Nata Semiconductor Materials Co., Ltd. | 20 |
2 |
| Zhejiang Britech Co., Ltd. | 4 |
2 |
| Evonik Industries AG | 224 |
1 |
| Samsung SDI Co., Ltd. | 8319 |
1 |
| Adeka Corporation | 1362 |
1 |
| Air Liquide Advanced Materials, Inc. | 9 |
1 |
| Chemetics Inc. | 63 |
1 |
| Enevate Corporation | 399 |
1 |
| EURENCO | 51 |
1 |
| Other owners | 17 |