- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/03 - Preparation by decomposition or reduction of gaseous or vaporised silicon compounds other than silica or silica-containing material by decomposition of silicon halides or halosilanes or reduction thereof with hydrogen as the only reducing agent
Patent holdings for IPC class C01B 33/03
Total number of patents in this class: 144
10-year publication summary
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7
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8
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7
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9
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7
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7
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5
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8
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6
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4
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2111 |
22 |
| Tokuyama Corporation | 1484 |
17 |
| Corner Star Limited | 94 |
12 |
| MEMC Electronic Materials, Inc. | 71 |
8 |
| Shin-Etsu Chemical Co., Ltd. | 6127 |
7 |
| Umicore | 776 |
5 |
| Jiangsu Zhongneng Polysilicon Technology Development Co., Ltd. | 10 |
4 |
| LG Chem, Ltd. | 17956 |
3 |
| Dynatec Engineering AS | 9 |
3 |
| REC Silicon Inc | 76 |
3 |
| High-purity Silicon Corporation | 73 |
3 |
| Honeycomb Battery Company | 407 |
3 |
| Evonik Degussa GmbH | 1349 |
2 |
| Konica Minolta Medical & Graphic, Inc. | 579 |
2 |
| Dow Corning Corporation | 873 |
2 |
| Hemlock Semiconductor Corporation | 32 |
2 |
| OCI Company Ltd. | 169 |
2 |
| Universidade Nova de Lisboa | 89 |
2 |
| L' Air Liquide Societe Anonyme Pour L' Etude et L' Exploitation des procedes Georges Claude | 47 |
2 |
| Hualu Engineering & Technology Co. Ltd | 9 |
2 |
| Other owners | 38 |