- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 25/229 - Hemihydrate-dihydrate process
Patent holdings for IPC class C01B 25/229
Total number of patents in this class: 4
10-year publication summary
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0
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0
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1
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0
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0
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0
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1
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0
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1
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0
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kingenta Ecological Engineering Group Co., Ltd. | 8 |
1 |
| Kingenta Norsterra Chemical Co., Ltd. | 8 |
1 |
| China Wuhuan Engineering Co., Ltd | 2 |
1 |
| Yidu Xingfa Chemical Co., Ltd | 4 |
1 |
| Other owners | 0 |