- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 19/60 - Pleochroic dyes
Patent holdings for IPC class C09K 19/60
Total number of patents in this class: 337
10-year publication summary
|
27
|
33
|
28
|
26
|
29
|
18
|
30
|
30
|
21
|
5
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merck Patent GmbH | 5830 |
73 |
| FUJIFILM Corporation | 29151 |
56 |
| Sumitomo Chemical Company, Limited | 9005 |
23 |
| Nitto Denko Corporation | 8163 |
19 |
| LG Chem, Ltd. | 17519 |
16 |
| Nippon Kayaku Kabushiki Kaisha | 1428 |
15 |
| DIC Corporation | 3729 |
13 |
| Transitions Optical, Inc. | 261 |
12 |
| JNC Corporation | 1543 |
6 |
| JNC Petrochemical Corporation | 402 |
6 |
| Transitions Optical Limited | 157 |
6 |
| Samsung Display Co., Ltd. | 33982 |
5 |
| Electronics and Telecommunications Research Institute | 9248 |
5 |
| Mitsubishi Chemical Corporation | 4474 |
5 |
| Boe Technology Group Co., Ltd. | 40369 |
5 |
| Alphamicron Incorporated | 84 |
5 |
| Samsung Electronics Co., Ltd. | 143021 |
4 |
| BASF SE | 20666 |
4 |
| Crysoptix KK | 38 |
3 |
| Jiangsu Hecheng Display Technology Co., Ltd. | 98 |
3 |
| Other owners | 53 |