- 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: 148
10-year publication summary
|
10
|
7
|
11
|
6
|
3
|
14
|
21
|
18
|
15
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 905 |
30 |
| Casale SA | 636 |
18 |
| ThyssenKrupp Uhde GmbH | 380 |
15 |
| ThyssenKrupp AG | 3399 |
6 |
| ThyssenKrupp Industrial Solutions AG | 630 |
5 |
| Icsip Pty Ltd | 21 |
4 |
| Nitrocapt AB | 19 |
4 |
| NuScale Power, LLC | 309 |
3 |
| Stamicarbon B.V. | 322 |
3 |
| Umicore AG & Co. KG | 852 |
3 |
| Plinke GmbH | 4 |
3 |
| Wisdri Engineering & Research Incorporation Limited | 222 |
3 |
| Altmerge, LLC | 9 |
2 |
| Ascend Performance Materials Operations LLC | 267 |
2 |
| Hanwha Corporation | 313 |
2 |
| Heraeus Deutschland GmbH & Co. KG | 402 |
2 |
| The University of Sydney | 640 |
2 |
| Fertis India Pvt. Ltd. | 71 |
2 |
| Samsung Electronics Co., Ltd. | 158156 |
1 |
| BASF SE | 21318 |
1 |
| Other owners | 37 |