- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 25/18 - Polycyclic aromatic halogenated hydrocarbons
Patent holdings for IPC class C07C 25/18
Total number of patents in this class: 199
10-year publication summary
|
18
|
16
|
13
|
10
|
10
|
10
|
9
|
8
|
15
|
2
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8808 |
11 |
| Merck Patent GmbH | 5909 |
9 |
| FUJIFILM Corporation | 27102 |
9 |
| JNC Corporation | 1527 |
6 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
5 |
| Albemarle Corporation | 514 |
5 |
| JNC Petrochemical Corporation | 425 |
5 |
| BASF SE | 19740 |
4 |
| Chisso Petrochemical Corporation | 66 |
4 |
| DIC Corporation | 3597 |
4 |
| Kyoto University | 2732 |
4 |
| Rohm and Haas Electronic Materials LLC | 637 |
4 |
| Tosoh Corporation | 1127 |
4 |
| Apple Inc. | 50209 |
3 |
| JSR Corporation | 2476 |
3 |
| Chisso Corporation | 70 |
3 |
| Max-Planck-Gesellschaft zur Forderung der Wissenschaften e.V. | 1657 |
3 |
| San-Apro Limited | 73 |
3 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
3 |
| General Electric Company | 18133 |
2 |
| Other owners | 105 |