- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 31/08 - Active carbon
Patent holdings for IPC class C01B 31/08
Total number of patents in this class: 501
10-year publication summary
|
57
|
59
|
20
|
8
|
7
|
6
|
5
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Corning Incorporated | 9932 |
35 |
| Blucher GmbH | 192 |
16 |
| British American Tobacco (Investments) Limited | 1032 |
11 |
| Kuraray Co., Ltd. | 3392 |
11 |
| Philip Morris Products S.A. | 6751 |
7 |
| MeadWestvaco Corporation | 370 |
7 |
| Carbon Technology Holdings, LLC | 185 |
6 |
| BASF SE | 19740 |
5 |
| Sony Corporation | 32931 |
5 |
| Hyundai Motor Company | 19021 |
5 |
| Georgia-Pacific Chemicals LLC | 204 |
5 |
| Albemarle Corporation | 514 |
5 |
| Pneumatic Processing Technologies, LLC | 9 |
5 |
| Saudi Arabian Oil Company | 11322 |
5 |
| Dow Global Technologies LLC | 10147 |
4 |
| Calgon Carbon Corporation | 224 |
4 |
| Cataler Corporation | 533 |
4 |
| Energ2 Technologies, Inc. | 28 |
4 |
| Inha-Industry Partnership Institute | 177 |
4 |
| Nichias Corporation | 386 |
4 |
| Other owners | 349 |