- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 44/02 - Azo dyes containing onium groups containing ammonium groups not directly attached to an azo group
Patent holdings for IPC class C09B 44/02
Total number of patents in this class: 5
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
|
|---|---|---|
| The Regents of the University of California | 19961 |
1 |
| Alfa Parf Group S.p.A. | 73 |
1 |
| Hodogaya Chemical Co., Ltd. | 436 |
1 |
| Merck Sharp & Dohme LLC | 3751 |
1 |
| Kiora Pharmaceuticals Pty Ltd | 2 |
1 |
| Other owners | 0 |