- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/40 - Preparation by absorption of oxides of nitrogen
Patent holdings for IPC class C01B 21/40
Total number of patents in this class: 114
10-year publication summary
|
2
|
6
|
5
|
10
|
9
|
4
|
16
|
7
|
13
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 893 |
15 |
| Casale SA | 633 |
13 |
| Stamicarbon B.V. | 317 |
10 |
| ThyssenKrupp Uhde GmbH | 376 |
9 |
| Icsip Pty Ltd | 21 |
6 |
| ThyssenKrupp AG | 3462 |
5 |
| ThyssenKrupp Industrial Solutions AG | 630 |
4 |
| N2 Applied AS | 12 |
3 |
| The University of Sydney | 630 |
3 |
| Nitrocapt AB | 19 |
3 |
| Messer SE & Co. KGaA | 170 |
3 |
| BASF SE | 21294 |
2 |
| Gifu University | 125 |
2 |
| Messer Group GmbH | 49 |
2 |
| Sawafuji Electric Co., Ltd. | 62 |
2 |
| JFR Co., Ltd. | 10 |
2 |
| Nitricity Inc. | 20 |
2 |
| Otkrytoe Aktsionernoe Obshchestvo «krasnoiarskii Zavod Tsvetnykh Metallov Imeni V.N. Gulidova», OAO «krastsvetmet» | 15 |
2 |
| Air Products and Chemicals, Inc. | 1472 |
1 |
| Korea Advanced Institute of Science and Technology | 4650 |
1 |
| Other owners | 24 |