- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 335/16 - Oxygen atoms, e.g. thioxanthones
Patent holdings for IPC class C07D 335/16
Total number of patents in this class: 132
10-year publication summary
|
13
|
16
|
7
|
19
|
13
|
8
|
7
|
6
|
6
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| San-Apro Limited | 73 |
11 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8635 |
6 |
| Agfa NV | 642 |
6 |
| Coloplast A/S | 1927 |
6 |
| Tokyo Electron Limited | 11599 |
5 |
| Agfa Graphics NV | 308 |
4 |
| Lintfield Limited | 6 |
4 |
| Adeka Corporation | 1333 |
3 |
| Arkema France | 3790 |
3 |
| Rohm and Haas Electronic Materials LLC | 637 |
3 |
| Sekisui Chemical Co., Ltd. | 3159 |
3 |
| Tokyo University of Science Foundation | 343 |
3 |
| TCL China Star Optoelectronics Technology Co., Ltd. | 2368 |
3 |
| Canon Inc. | 36841 |
2 |
| FUJIFILM Corporation | 27102 |
2 |
| Sumitomo Chemical Company, Limited | 8808 |
2 |
| Wako Pure Chemical Industries, Ltd. | 153 |
2 |
| Agfa-Gevaert | 282 |
2 |
| Ewha University-industry Collaboration Foundation | 617 |
2 |
| Jenkem Technology Co., Ltd. (Beijing) | 44 |
2 |
| Other owners | 58 |