- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 25/027 - Preparation of phosphorus of yellow phosphorus
Patent holdings for IPC class C01B 25/027
Total number of patents in this class: 9
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Intermet Technologies Chengdu Co., Ltd | 20 |
1 |
| Kunming University of Science and Technology | 178 |
1 |
| Sumitomo Osaka Cement Co., Ltd. | 846 |
1 |
| Zhengzhou University | 123 |
1 |
| Hubei Sanxin Phosphoric Acid Co., Ltd. | 2 |
1 |
| Universite Hassan 1er de Settat | 4 |
1 |
| Université Hassan II de Casablanca | 17 |
1 |
| Université Mohammed VI Polytechnique | 41 |
1 |
| Zhejiang Chengtai Chemical Machinery Co., Ltd. | 1 |
1 |
| Other owners | 0 |