- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/039 - Purification by conversion of the silicon into a compound, optional purification of the compound, and reconversion into silicon
Patent holdings for IPC class C01B 33/039
Total number of patents in this class: 33
10-year publication summary
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3
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2
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1
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1
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0
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1
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1
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2
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1
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1
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corner Star Limited | 94 |
3 |
| Arise Technologies Corporation | 7 |
2 |
| KCC Corporation | 354 |
2 |
| C.s.laboratory in Technology Ltd. | 3 |
2 |
| Town Mining Co., Ltd. | 4 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11137 |
1 |
| Hemlock Semiconductor Corporation | 32 |
1 |
| Enevate Corporation | 441 |
1 |
| Inductotherm Corp. | 153 |
1 |
| Korea Institute of Industrial Technology | 1032 |
1 |
| Kyoto University | 2957 |
1 |
| Lanxess Deutschland GmbH | 1157 |
1 |
| MEMC Electronic Materials, Inc. | 71 |
1 |
| OCI Company Ltd. | 172 |
1 |
| Osaka University | 3253 |
1 |
| Sunlit S.r.l. | 1 |
1 |
| UChicago Argonne, LLC | 965 |
1 |
| Wacker Chemie AG | 2128 |
1 |
| Laine, Richard M | 4 |
1 |
| Wuhan University of Science and Technology | 70 |
1 |
| Other owners | 7 |