- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/30 - Active carbon
Patent holdings for IPC class C01B 32/30
Total number of patents in this class: 296
10-year publication summary
|
23
|
28
|
40
|
25
|
27
|
20
|
24
|
24
|
31
|
19
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kuraray Co., Ltd. | 3621 |
27 |
| Carbon Technology Holdings, LLC | 234 |
17 |
| Carbon Holdings Intellectual Properties, LLC | 68 |
11 |
| Sony Corporation | 29887 |
9 |
| Nippon Paper Industries Co., Ltd. | 854 |
9 |
| Evoqua Water Technologies LLC | 928 |
8 |
| Group14 Technologies, Inc. | 123 |
7 |
| Nippon Steel Chemical & Material Co., Ltd. | 755 |
7 |
| National Institute of Advanced Industrial Science and Technology | 3791 |
6 |
| Futamura Kagaku Kabushiki Kaisha | 94 |
6 |
| Osaka Gas Chemicals Co., Ltd. | 154 |
6 |
| Orion Engineered Carbons GmbH | 73 |
5 |
| Dexerials Corporation | 2019 |
4 |
| Carbonix Inc. | 10 |
4 |
| BASF SE | 21334 |
3 |
| Farad Power, Inc. | 12 |
3 |
| The Governors of the University of Alberta | 881 |
3 |
| Norit Americas Inc. | 10 |
3 |
| Tohoku Techno Arch Co., Ltd. | 121 |
3 |
| TPR Co., Ltd. | 174 |
3 |
| Other owners | 152 |