- All sections
- C - Chemistrymetallurgy
- C01B - Non-metallic elementscompounds thereof
- C01B 32/33 - Preparation characterised by the starting materials from distillation residues of coal or petroleumPreparation characterised by the starting materials from petroleum acid sludge
Patent holdings for IPC class C01B 32/33
Total number of patents in this class: 59
10-year publication summary
|
1
|
4
|
7
|
5
|
4
|
3
|
6
|
7
|
5
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hanwha Solutions Corporation | 1183 |
7 |
| China Petroleum & Chemical Corporation | 2158 |
2 |
| ENI S.p.A. | 1309 |
2 |
| Farad Power, Inc. | 12 |
2 |
| OCI Company Ltd. | 166 |
2 |
| POSCO Chemtech | 5 |
2 |
| Pukyong National University Industry-University Cooperation Foundation | 376 |
2 |
| SunCor Energy Inc. | 732 |
2 |
| Tokai Carbon Korea Co., Ltd. | 55 |
2 |
| Unitika Ltd. | 449 |
2 |
| ARQ IP Limited | 43 |
2 |
| Ad'all Co., Ltd. | 10 |
2 |
| Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd. | 139 |
2 |
| LG Chem, Ltd. | 17937 |
1 |
| Hyundai Motor Company | 24745 |
1 |
| Panasonic Intellectual Property Management Co., Ltd. | 34080 |
1 |
| Kia Motors Corporation | 7718 |
1 |
| Korea Advanced Institute of Science and Technology | 4675 |
1 |
| Board of Trustees of Michigan State University | 1214 |
1 |
| Indian Oil Corporation Limited | 337 |
1 |
| Other owners | 21 |