- All sections
- C - Chemistrymetallurgy
- C09B - Organic dyes or closely-related compounds for producing dyesmordantslakes
- C09B 31/20 - Trisazo dyes from a coupling component "D" containing a directive hydroxy group
Patent holdings for IPC class C09B 31/20
Total number of patents in this class: 19
10-year publication summary
|
4
|
0
|
1
|
4
|
1
|
1
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Nippon Kayaku Kabushiki Kaisha | 1459 |
6 |
| Polatechno Co., Ltd. | 110 |
4 |
| FUJIFILM Corporation | 30206 |
3 |
| Mitsubishi Chemical Corporation | 4687 |
2 |
| Merck Patent GmbH | 5716 |
1 |
| Kemira Oyj | 1228 |
1 |
| The Regents of the University of Colorado, a body corporate | 2779 |
1 |
| Chromascape, LLC | 45 |
1 |
| Other owners | 0 |