- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/38 - Nitric acid
Patent holdings for IPC class C01B 21/38
Total number of patents in this class: 126
10-year publication summary
|
3
|
9
|
6
|
8
|
5
|
2
|
9
|
14
|
14
|
9
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 863 |
23 |
| Casale SA | 617 |
18 |
| ThyssenKrupp Uhde GmbH | 332 |
14 |
| ThyssenKrupp Industrial Solutions AG | 632 |
5 |
| Ascend Performance Materials Operations LLC | 273 |
4 |
| ThyssenKrupp AG | 3298 |
4 |
| Umicore AG & Co. KG | 856 |
3 |
| Plinke GmbH | 5 |
3 |
| Altmerge, LLC | 9 |
2 |
| Hanwha Corporation | 297 |
2 |
| Heraeus Deutschland GmbH & Co. KG | 418 |
2 |
| NuScale Power, LLC | 277 |
2 |
| Stamicarbon B.V. | 302 |
2 |
| The University of Sydney | 603 |
2 |
| Fertis India Pvt. Ltd. | 54 |
2 |
| Wisdri Engineering & Research Incorporation Limited | 210 |
2 |
| Nitrocapt AB | 13 |
2 |
| Samsung Electronics Co., Ltd. | 147131 |
1 |
| BASF SE | 20967 |
1 |
| Centre National de La Recherche Scientifique | 10476 |
1 |
| Other owners | 31 |