- 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: 282
10-year publication summary
|
22
|
25
|
37
|
22
|
20
|
15
|
20
|
23
|
27
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kuraray Co., Ltd. | 3559 |
25 |
| Carbon Technology Holdings, LLC | 225 |
18 |
| Carbon Holdings Intellectual Properties, LLC | 63 |
11 |
| Sony Corporation | 30588 |
9 |
| Nippon Paper Industries Co., Ltd. | 833 |
9 |
| Evoqua Water Technologies LLC | 926 |
8 |
| Group14 Technologies, Inc. | 115 |
7 |
| National Institute of Advanced Industrial Science and Technology | 3795 |
6 |
| Futamura Kagaku Kabushiki Kaisha | 86 |
6 |
| Orion Engineered Carbons GmbH | 71 |
5 |
| Dexerials Corporation | 1972 |
4 |
| Osaka Gas Chemicals Co., Ltd. | 143 |
4 |
| Nippon Steel Chemical & Material Co., Ltd. | 684 |
4 |
| Carbonix Inc. | 10 |
4 |
| BASF SE | 21134 |
3 |
| Farad Power, Inc. | 12 |
3 |
| The Governors of the University of Alberta | 872 |
3 |
| Tohoku Techno Arch Co., Ltd. | 123 |
3 |
| TPR Co., Ltd. | 165 |
3 |
| Unitika Ltd. | 441 |
3 |
| Other owners | 144 |