- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 21/26 - Preparation by catalytic oxidation of ammonia
Patent holdings for IPC class C01B 21/26
Total number of patents in this class: 239
10-year publication summary
|
6
|
12
|
18
|
9
|
15
|
18
|
25
|
19
|
26
|
12
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 901 |
53 |
| Casale SA | 633 |
27 |
| ThyssenKrupp Uhde GmbH | 379 |
26 |
| ThyssenKrupp AG | 3423 |
14 |
| ThyssenKrupp Industrial Solutions AG | 630 |
12 |
| Umicore AG & Co. KG | 853 |
11 |
| Stamicarbon B.V. | 319 |
9 |
| Heraeus Deutschland GmbH & Co. KG | 403 |
8 |
| Johnson Matthey Public Limited Company | 1767 |
6 |
| K.a.rasmussen | 5 |
5 |
| The University of Oslo (uio) | 5 |
5 |
| BASF SE | 21303 |
4 |
| The University of Sydney | 632 |
4 |
| Heraeus Precious Metals GmbH & Co. KG | 97 |
3 |
| The Johns Hopkins University | 5875 |
2 |
| Bedfont Scientific Ltd | 35 |
2 |
| Colorado State University Research Foundation | 722 |
2 |
| Messer Group GmbH | 49 |
2 |
| NuScale Power, LLC | 307 |
2 |
| Haldor Topsøe A/S | 636 |
2 |
| Other owners | 40 |