- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/05 - Preparation or purification of carbon not covered by groups , , ,
Patent holdings for IPC class C01B 32/05
Total number of patents in this class: 2085
10-year publication summary
|
131
|
127
|
138
|
155
|
182
|
209
|
213
|
276
|
308
|
106
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Guangdong Brunp Recycling Technology Co., Ltd | 1250 |
37 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1219 |
37 |
| Kuraray Co., Ltd. | 3572 |
34 |
| LG Energy Solution, Ltd. | 17738 |
32 |
| LG Chem, Ltd. | 17846 |
31 |
| Toray Industries, Inc. | 7046 |
21 |
| Stora Enso Oyj | 1633 |
21 |
| Carbon Technology Holdings, LLC | 230 |
21 |
| Monolith Materials, Inc. | 123 |
20 |
| BASF SE | 21150 |
19 |
| Nisshinbo Holdings Inc. | 375 |
19 |
| Group14 Technologies, Inc. | 118 |
18 |
| Carbon Holdings Intellectual Properties, LLC | 67 |
16 |
| Hanwha Solutions Corporation | 1045 |
16 |
| Korea Advanced Institute of Science and Technology | 4584 |
14 |
| BTR New Material Group Co., Ltd. | 264 |
13 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3938 |
13 |
| Nippon Steel Chemical & Material Co., Ltd. | 702 |
12 |
| Rain Carbon Germany GmbH | 65 |
12 |
| Hunan Brunp EV Recycling Co., Ltd. | 376 |
12 |
| Other owners | 1667 |