- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 32/30 - Active carbon
Patent holdings for IPC class C01B 32/30
Total number of patents in this class: 223
10-year publication summary
|
11
|
12
|
23
|
28
|
40
|
25
|
26
|
16
|
18
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Kuraray Co., Ltd. | 3392 |
21 |
| Carbon Technology Holdings, LLC | 185 |
14 |
| Carbon Holdings Intellectual Properties, LLC | 41 |
10 |
| Nippon Paper Industries Co., Ltd. | 782 |
9 |
| Evoqua Water Technologies LLC | 904 |
8 |
| Sony Corporation | 32931 |
7 |
| Futamura Kagaku Kabushiki Kaisha | 71 |
5 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
4 |
| Dexerials Corporation | 1826 |
4 |
| Orion Engineered Carbons GmbH | 57 |
4 |
| BASF SE | 19740 |
3 |
| Georgia-Pacific Chemicals LLC | 204 |
3 |
| Energ2 Technologies, Inc. | 28 |
3 |
| Farad Power, Inc. | 11 |
3 |
| The Governors of the University of Alberta | 869 |
3 |
| Group14 Technologies, Inc. | 73 |
3 |
| Tohoku Techno Arch Co., Ltd. | 135 |
3 |
| TPR Co., Ltd. | 141 |
3 |
| Unitika Ltd. | 441 |
3 |
| Hazel Technologies, Inc. | 43 |
3 |
| Other owners | 107 |