- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 25/22 - Polycyclic aromatic halogenated hydrocarbons with condensed rings
Patent holdings for IPC class C07C 25/22
Total number of patents in this class: 236
10-year publication summary
|
38
|
12
|
12
|
7
|
7
|
7
|
11
|
8
|
6
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 41007 |
20 |
| Sumitomo Chemical Company, Limited | 9110 |
16 |
| Canon Kabushiki Kaisha | 7143 |
14 |
| Merck Patent GmbH | 5755 |
13 |
| ZHU, Xiaotao | 13 |
8 |
| LG Chem, Ltd. | 17682 |
7 |
| JIN, Yinghua | 11 |
7 |
| WANG, Nengqing | 20 |
7 |
| Cambridge Display Technology Limited | 491 |
6 |
| Samsung Display Co., Ltd. | 36165 |
5 |
| UDC Ireland Limited | 470 |
5 |
| Idemitsu Kosan Co., Ltd. | 4225 |
4 |
| BioLegend, Inc. | 64 |
4 |
| JNC Corporation | 1506 |
3 |
| JNC Petrochemical Corporation | 327 |
3 |
| National University Corporation Hokkaido University | 1349 |
3 |
| National University Corporation Tokai National Higher Education and Research System | 761 |
3 |
| Apple Inc. | 56211 |
2 |
| Ricoh Company, Ltd. | 13367 |
2 |
| Mitsubishi Chemical Corporation | 4604 |
2 |
| Other owners | 102 |