- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 29/20 - Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group ortho-Hydroxy carbonamides of the naphthalene series
Patent holdings for IPC class C09B 29/20
Total number of patents in this class: 40
10-year publication summary
|
1
|
0
|
1
|
2
|
2
|
5
|
2
|
1
|
1
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 28829 |
11 |
| Toyo Ink SC Holdings Co., Ltd. | 489 |
6 |
| Toyocolor Co., Ltd. | 183 |
4 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 361 |
3 |
| Nippon Kayaku Kabushiki Kaisha | 1428 |
3 |
| Agfa Graphics NV | 297 |
2 |
| Menicon Co., Ltd. | 419 |
2 |
| DIC Corporation | 3677 |
1 |
| DNP Fine Chemicals Co., Ltd. | 173 |
1 |
| Hodogaya Chemical Co., Ltd. | 427 |
1 |
| Huntsman Advanced Materials (Switzerland) GmbH | 166 |
1 |
| Kolon Industries, Inc. | 1596 |
1 |
| Toda Kogyo Corporation | 341 |
1 |
| Toyo Ink Co., Ltd. | 102 |
1 |
| FUJIFILM Wako Pure Chemical Corporation | 161 |
1 |
| Artience Co., Ltd. | 166 |
1 |
| Other owners | 0 |