- 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: 274
10-year publication summary
|
10
|
22
|
25
|
37
|
22
|
20
|
14
|
20
|
22
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kuraray Co., Ltd. | 3532 |
25 |
| Carbon Technology Holdings, LLC | 218 |
18 |
| Carbon Holdings Intellectual Properties, LLC | 60 |
10 |
| Nippon Paper Industries Co., Ltd. | 833 |
9 |
| Sony Corporation | 30856 |
8 |
| Evoqua Water Technologies LLC | 917 |
8 |
| Group14 Technologies, Inc. | 114 |
7 |
| National Institute of Advanced Industrial Science and Technology | 3793 |
5 |
| Futamura Kagaku Kabushiki Kaisha | 82 |
5 |
| Orion Engineered Carbons GmbH | 67 |
5 |
| Dexerials Corporation | 1948 |
4 |
| Osaka Gas Chemicals Co., Ltd. | 140 |
4 |
| Nippon Steel Chemical & Material Co., Ltd. | 672 |
4 |
| Carbonix Inc. | 9 |
4 |
| BASF SE | 21078 |
3 |
| Farad Power, Inc. | 12 |
3 |
| The Governors of the University of Alberta | 881 |
3 |
| Tohoku Techno Arch Co., Ltd. | 124 |
3 |
| TPR Co., Ltd. | 163 |
3 |
| Unitika Ltd. | 447 |
3 |
| Other owners | 140 |