- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 25/237 - Selective elimination of impurities
Patent holdings for IPC class C01B 25/237
Total number of patents in this class: 27
10-year publication summary
|
1
|
0
|
0
|
3
|
1
|
0
|
0
|
2
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Urtek, LLC | 9 |
3 |
| Cppe Carbon Process & Plant Engineering S.A. | 25 |
2 |
| Ecophos | 7 |
2 |
| Guangdong Brunp Recycling Technology Co., Ltd | 1246 |
2 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1215 |
2 |
| Université Mohammed VI Polytechnique | 43 |
2 |
| 3m Innovative Properties Company | 17717 |
1 |
| Ajinomoto Co., Inc. | 2306 |
1 |
| Cytec Industries Inc. | 396 |
1 |
| Institute of Process Engineering, Chinese Academy of Sciences | 303 |
1 |
| JDCPhosphate, Inc. | 3 |
1 |
| Prayon | 10 |
1 |
| Prayon Technologies | 46 |
1 |
| Sulzer Chemtech AG | 64 |
1 |
| Sulzer Management AG | 686 |
1 |
| Yara International ASA | 863 |
1 |
| Tenova Advanced Technologies Ltd. | 16 |
1 |
| Hubei Forbon Technology Co., Ltd. | 42 |
1 |
| Jesa Technologies LLC | 7 |
1 |
| Yichang Brunp Yihua New Material Co., Ltd | 11 |
1 |
| Other owners | 0 |