- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/187 - Preparation of finely divided silica neither in sol nor in gel formAfter-treatment thereof by acidic treatment of silicates
Patent holdings for IPC class C01B 33/187
Total number of patents in this class: 65
10-year publication summary
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3
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2
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4
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3
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4
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1
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4
|
6
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4
|
3
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rhodia Operations | 1485 |
7 |
| Evonik Operations GmbH | 4416 |
7 |
| TATA Chemicals Limited | 86 |
3 |
| BASF SE | 21320 |
2 |
| Evonik Degussa GmbH | 1345 |
2 |
| Commissariat à l'énergie atomique et aux energies alternatives | 11130 |
2 |
| Heraeus Quarzglas GmbH & Co. KG | 416 |
2 |
| Nanolith Sverige AB | 2 |
2 |
| Universite de Cergy Pontoise | 30 |
2 |
| Wacker Chemie AG | 2117 |
2 |
| Sibelco Nederland N.V. | 42 |
2 |
| Tianqi Lithium Kwinana Pty Ltd | 10 |
2 |
| Dow Global Technologies LLC | 11051 |
1 |
| Admatechs Company Limited | 98 |
1 |
| AGC Si-Tech Co., Ltd. | 71 |
1 |
| Bluestar Silicones France. | 64 |
1 |
| Citibank, N.A., AS Administrative Agent | 241 |
1 |
| Clarkson University | 101 |
1 |
| FUJIFILM Electronic Materials U.S.A., Inc. | 354 |
1 |
| Institutt for Energiteknikk | 66 |
1 |
| Other owners | 22 |