- 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: 1755
10-year publication summary
|
41
|
131
|
127
|
138
|
155
|
182
|
208
|
214
|
264
|
141
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Guangdong Brunp Recycling Technology Co., Ltd | 1175 |
37 |
| Hunan Brunp Recycling Technology Co., Ltd. | 1143 |
37 |
| LG Chem, Ltd. | 17538 |
30 |
| Kuraray Co., Ltd. | 3495 |
30 |
| LG Energy Solution, Ltd. | 14258 |
23 |
| Toray Industries, Inc. | 6867 |
20 |
| Monolith Materials, Inc. | 126 |
19 |
| Group14 Technologies, Inc. | 104 |
17 |
| Nisshinbo Holdings Inc. | 366 |
17 |
| Carbon Technology Holdings, LLC | 207 |
17 |
| Stora Enso Oyj | 1599 |
15 |
| Carbon Holdings Intellectual Properties, LLC | 59 |
15 |
| Hunan Brunp EV Recycling Co., Ltd. | 370 |
12 |
| Contemporary Amperex Technology (Hong Kong) Limited | 3332 |
12 |
| Sumitomo Electric Industries, Ltd. | 15292 |
10 |
| Showa Denko K.K. | 2279 |
10 |
| Asahi Kasei Kabushiki Kaisha | 2633 |
10 |
| Kureha Corporation | 1017 |
10 |
| BASF SE | 20728 |
9 |
| The Regents of the University of California | 19784 |
9 |
| Other owners | 1396 |