- All sections
- C - Chemistry; metallurgy
- C01B - Non-metallic elements; compounds thereof
- C01B 15/023 - Preparation from organic compounds by the alkyl-anthraquinone process
Patent holdings for IPC class C01B 15/023
Total number of patents in this class: 113
10-year publication summary
|
5
|
4
|
2
|
4
|
5
|
10
|
13
|
17
|
11
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Solvay SA | 1027 |
38 |
| Evonik Operations GmbH | 4017 |
13 |
| Arkema France | 3888 |
6 |
| Mitsubishi Gas Chemical Company, Inc. | 3334 |
6 |
| China Petroleum & Chemical Corporation | 1767 |
5 |
| Heesung Catalysts Corporation | 110 |
5 |
| BASF SE | 20367 |
4 |
| Nanjing Institute of Microinterface Technology Co., Ltd | 42 |
4 |
| Research Institute of Petroleum Processing, Sinopec | 383 |
3 |
| Solvay (China) Co., Ltd. | 31 |
3 |
| Evonik Corporation | 95 |
2 |
| FUJIFILM Corporation | 28467 |
2 |
| OCI Company Ltd. | 135 |
2 |
| The University of British Columbia | 1464 |
2 |
| Yangzhou Huitong Chemical Engineering Technique Co., Ltd | 3 |
2 |
| Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd. | 72 |
2 |
| The Regents of the University of California | 19479 |
1 |
| Akzo Nobel N.V. | 199 |
1 |
| Beijing University of Chemical Technology | 300 |
1 |
| Dalian Institute of Chemical Physics, Chinese Academy of Sciences | 640 |
1 |
| Other owners | 10 |