- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 49/04 - Sulfur dyes from amino compounds of the benzene, naphthalene or anthracene series
Patent holdings for IPC class C09B 49/04
Total number of patents in this class: 7
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 9043 |
1 |
| Cambridge Display Technology Limited | 496 |
1 |
| Dongjin Semichem Co., Ltd. | 487 |
1 |
| e Ink Corporation | 1501 |
1 |
| Jiangnan University | 1531 |
1 |
| Kolon Industries, Inc. | 1688 |
1 |
| Ultima Genomics, Inc. | 209 |
1 |
| Other owners | 0 |