- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds 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: 1362
10-year publication summary
|
33
|
41
|
131
|
127
|
138
|
155
|
179
|
206
|
194
|
73
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17205 |
30 |
| Kuraray Co., Ltd. | 3392 |
27 |
| Guangdong Brunp Recycling Technology Co., Ltd | 674 |
23 |
| Hunan Brunp Recycling Technology Co., Ltd. | 622 |
23 |
| Toray Industries, Inc. | 6652 |
19 |
| LG Energy Solution, Ltd. | 10813 |
16 |
| Monolith Materials, Inc. | 112 |
15 |
| Carbon Technology Holdings, LLC | 185 |
14 |
| Carbon Holdings Intellectual Properties, LLC | 41 |
14 |
| Nisshinbo Holdings Inc. | 333 |
13 |
| Group14 Technologies, Inc. | 73 |
12 |
| Hunan Brunp EV Recycling Co., Ltd. | 327 |
11 |
| Sumitomo Electric Industries, Ltd. | 14131 |
10 |
| Showa Denko K.K. | 2539 |
10 |
| Kureha Corporation | 1026 |
10 |
| Stora Enso Oyj | 1504 |
10 |
| Mitsubishi Chemical Corporation | 4313 |
9 |
| Nippon Telegraph and Telephone Corporation | 14195 |
9 |
| West Virginia University Research Corporation | 21 |
9 |
| Asahi Kasei Kabushiki Kaisha | 2429 |
8 |
| Other owners | 1070 |