- All sections
- C - Chemistrymetallurgy
- C09K - Materials for applications not otherwise provided forapplications of materials not otherwise provided for
- C09K 19/18 - Non-steroidal liquid crystal compounds containing at least two non-condensed rings containing at least two benzene rings linked by a carbon chain the chain containing carbon-to-carbon triple bonds, e.g. tolans
Patent holdings for IPC class C09K 19/18
Total number of patents in this class: 520
10-year publication summary
|
39
|
47
|
42
|
46
|
42
|
23
|
21
|
14
|
27
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merck Patent GmbH | 5767 |
130 |
| DIC Corporation | 3818 |
129 |
| JNC Corporation | 1568 |
77 |
| JNC Petrochemical Corporation | 400 |
69 |
| Chisso Petrochemical Corporation | 61 |
17 |
| FUJIFILM Corporation | 29696 |
10 |
| Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd. | 199 |
10 |
| Chisso Corporation | 63 |
9 |
| Jiangsu Hecheng Display Technology Co., Ltd. | 105 |
7 |
| Rolic Technologies AG | 44 |
5 |
| Sharp Corporation | 10274 |
4 |
| Nitto Denko Corporation | 8338 |
4 |
| Essilor International (compagnie Generale D'optique) | 2992 |
4 |
| Huawei Technologies Co., Ltd. | 114071 |
3 |
| Kyushu University, National University Corporation | 1661 |
3 |
| Sharp Kabushiki Kaisha | 18693 |
3 |
| Nikon Corporation | 7271 |
2 |
| AGC Seimi Chemical Co., Ltd. | 58 |
2 |
| Adeka Corporation | 1365 |
2 |
| Kymeta Corporation | 264 |
2 |
| Other owners | 28 |