- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 35/24 - Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of a diaryl amine
Patent holdings for IPC class C09B 35/24
Total number of patents in this class: 4
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
|
|---|---|---|
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 371 |
1 |
| Ilford Imaging Switzerland GmbH | 8 |
1 |
| Menicon Co., Ltd. | 422 |
1 |
| Rex-Tone Industries Ltd | 4 |
1 |
| Other owners | 0 |