- 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: 349
10-year publication summary
|
34
|
33
|
26
|
21
|
23
|
29
|
30
|
27
|
27
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2106 |
18 |
| Enevate Corporation | 399 |
16 |
| Toyota Motor Corporation | 32116 |
14 |
| Kabushiki Kaisha Toyota Jidoshokki | 1753 |
8 |
| LG Energy Solution, Ltd. | 14982 |
8 |
| Nisshin Seifun Group Inc. | 243 |
7 |
| Nexeon Limited | 157 |
6 |
| LG Chem, Ltd. | 17632 |
5 |
| Sharp Corporation | 10237 |
5 |
| Group14 Technologies, Inc. | 108 |
5 |
| National University Corporation Kanazawa University | 245 |
5 |
| REC Silicon Inc | 75 |
5 |
| Corner Star Limited | 95 |
5 |
| Oned Material, Inc. | 57 |
5 |
| Lockheed Martin Corporation | 3277 |
4 |
| Toyota Industries Corporation | 1117 |
4 |
| OCI Company Ltd. | 153 |
4 |
| ChengDu Silicon Technology Co., Ltd. | 11 |
4 |
| Enwires | 18 |
4 |
| Honeycomb Battery Company | 388 |
4 |
| Other owners | 213 |