- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 33/021 - Preparation
Patent holdings for IPC class C01B 33/021
Total number of patents in this class: 348
10-year publication summary
|
34
|
33
|
26
|
21
|
23
|
29
|
30
|
27
|
27
|
23
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2107 |
18 |
| Enevate Corporation | 399 |
16 |
| Toyota Motor Corporation | 31819 |
14 |
| Kabushiki Kaisha Toyota Jidoshokki | 1750 |
8 |
| LG Energy Solution, Ltd. | 14807 |
8 |
| Nisshin Seifun Group Inc. | 242 |
7 |
| Nexeon Limited | 156 |
6 |
| LG Chem, Ltd. | 17598 |
5 |
| Sharp Corporation | 10312 |
5 |
| Group14 Technologies, Inc. | 107 |
5 |
| National University Corporation Kanazawa University | 245 |
5 |
| REC Silicon Inc | 76 |
5 |
| Corner Star Limited | 95 |
5 |
| Oned Material, Inc. | 57 |
5 |
| Lockheed Martin Corporation | 3276 |
4 |
| Toyota Industries Corporation | 1112 |
4 |
| OCI Company Ltd. | 152 |
4 |
| ChengDu Silicon Technology Co., Ltd. | 11 |
4 |
| Enwires | 18 |
4 |
| Honeycomb Battery Company | 388 |
4 |
| Other owners | 212 |