- All sections
- C - Chemistry; metallurgy
- C09B - Organic dyes or closely-related compounds for producing dyes; mordants; lakes
- C09B 33/12 - Disazo dyes in which the coupling component is a heterocyclic compound
Patent holdings for IPC class C09B 33/12
Total number of patents in this class: 51
10-year publication summary
|
3
|
1
|
1
|
1
|
2
|
0
|
0
|
0
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0
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| FUJIFILM Corporation | 27102 |
34 |
| Nippon Kayaku Kabushiki Kaisha | 1400 |
9 |
| DyStar Colours Distribution GmbH | 172 |
3 |
| Seiko Epson Corporation | 18724 |
1 |
| Amazon Technologies, Inc. | 24422 |
1 |
| Dainichiseika Color & Chemicals Mfg. Co., Ltd. | 354 |
1 |
| FUJIFILM Imaging Colorants Limited | 233 |
1 |
| Canon Kabushiki Kaisha | 6884 |
1 |
| Other owners | 0 |