- 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: 226
10-year publication summary
|
5
|
9
|
13
|
8
|
12
|
13
|
16
|
14
|
17
|
7
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Yara International ASA | 880 |
47 |
| Casale SA | 627 |
26 |
| ThyssenKrupp Uhde GmbH | 368 |
26 |
| ThyssenKrupp AG | 3456 |
14 |
| ThyssenKrupp Industrial Solutions AG | 631 |
12 |
| Umicore AG & Co. KG | 859 |
11 |
| Stamicarbon B.V. | 312 |
9 |
| Heraeus Deutschland GmbH & Co. KG | 405 |
8 |
| Johnson Matthey Public Limited Company | 1736 |
6 |
| BASF SE | 21147 |
4 |
| The University of Sydney | 624 |
4 |
| K.a.rasmussen | 3 |
3 |
| The University of Oslo (uio) | 3 |
3 |
| The Johns Hopkins University | 5798 |
2 |
| Bedfont Scientific Ltd | 36 |
2 |
| Colorado State University Research Foundation | 723 |
2 |
| Heraeus Precious Metals GmbH & Co. KG | 89 |
2 |
| Messer Group GmbH | 50 |
2 |
| NuScale Power, LLC | 295 |
2 |
| Haldor Topsøe A/S | 638 |
2 |
| Other owners | 39 |