- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 25/00 - Quinophthalones
Patent holdings for IPC class C09B 25/00
Total number of patents in this class: 65
10-year publication summary
|
4
|
8
|
2
|
10
|
9
|
7
|
1
|
5
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 30628 |
21 |
| DIC Corporation | 3982 |
8 |
| Sumitomo Chemical Company, Limited | 8969 |
5 |
| Dai Nippon Printing Co., Ltd. | 4254 |
4 |
| Nippon Kayaku Kabushiki Kaisha | 1463 |
4 |
| Toyo Ink SC Holdings Co., Ltd. | 462 |
3 |
| Toyocolor Co., Ltd. | 253 |
3 |
| DNP Fine Chemicals Co., Ltd. | 184 |
2 |
| LG Display Co., Ltd. | 15018 |
1 |
| Canon Inc. | 44134 |
1 |
| Celanese International Corporation | 912 |
1 |
| King Saud University | 519 |
1 |
| Nanyang Technological University | 2229 |
1 |
| Nippon Shokubai Co., Ltd. | 1536 |
1 |
| Orient Chemical Industries, Ltd. | 22 |
1 |
| Osaka University | 3261 |
1 |
| Sekisui Chemical Co., Ltd. | 3638 |
1 |
| Taiyo Holdings Co., Ltd. | 326 |
1 |
| Turner Colour Works Ltd. | 13 |
1 |
| Amogh Chemicals Pvt. Ltd | 2 |
1 |
| Other owners | 3 |