- 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
|
5
|
4
|
8
|
2
|
10
|
9
|
7
|
1
|
5
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 29728 |
22 |
| DIC Corporation | 3827 |
8 |
| Sumitomo Chemical Company, Limited | 9089 |
5 |
| Dai Nippon Printing Co., Ltd. | 4130 |
4 |
| Nippon Kayaku Kabushiki Kaisha | 1449 |
4 |
| Toyo Ink SC Holdings Co., Ltd. | 464 |
3 |
| Toyocolor Co., Ltd. | 226 |
3 |
| DNP Fine Chemicals Co., Ltd. | 178 |
2 |
| LG Display Co., Ltd. | 13842 |
1 |
| Canon Inc. | 40733 |
1 |
| Celanese International Corporation | 914 |
1 |
| King Saud University | 435 |
1 |
| Kiwa Chemical Industry Co., Ltd. | 23 |
1 |
| Nanyang Technological University | 2051 |
1 |
| Nippon Shokubai Co., Ltd. | 1505 |
1 |
| Orient Chemical Industries, Ltd. | 27 |
1 |
| Osaka University | 3396 |
1 |
| Sekisui Chemical Co., Ltd. | 3477 |
1 |
| Taiyo Holdings Co., Ltd. | 289 |
1 |
| Turner Colour Works Ltd. | 13 |
1 |
| Other owners | 2 |