- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 25/238 - Cationic impurities
Patent holdings for IPC class C01B 25/238
Total number of patents in this class: 57
10-year publication summary
|
3
|
0
|
2
|
2
|
5
|
4
|
6
|
9
|
7
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| K-technologies, Inc. | 13 |
8 |
| Yara International ASA | 909 |
8 |
| Cytec Industries Inc. | 410 |
7 |
| OCP S.A. | 90 |
6 |
| Université Mohammed VI Polytechnique | 62 |
6 |
| Easymining Sweden AB | 74 |
5 |
| Prayon Technologies | 48 |
2 |
| Urtek, LLC | 9 |
2 |
| Babcock Noell GmbH | 15 |
1 |
| Buss ChemTech AG | 5 |
1 |
| Cytec Industrial Materials (Derby) Limited | 5 |
1 |
| Ecophos | 7 |
1 |
| Nagase Chemtex Corporation | 211 |
1 |
| Prayon | 12 |
1 |
| Ram Technology Co., Ltd. | 6 |
1 |
| REMONDIS Aqua GmbH & Co. KG | 20 |
1 |
| Rotem Amfert Negev Ltd. | 27 |
1 |
| Tecnicas Reunidas, S.A. | 42 |
1 |
| Centre d'Etudes et de Recherches des Phosphates Mineraux | 1 |
1 |
| „alventa” Spółka Akcyjna | 1 |
1 |
| Other owners | 1 |