- All sections
- C - Chemistry; metallurgy
- C09K - Materials for applications not otherwise provided for; applications 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: 499
10-year publication summary
|
31
|
39
|
47
|
42
|
45
|
42
|
23
|
21
|
14
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| DIC Corporation | 3597 |
131 |
| Merck Patent GmbH | 5909 |
125 |
| JNC Corporation | 1527 |
77 |
| JNC Petrochemical Corporation | 425 |
69 |
| Chisso Petrochemical Corporation | 66 |
17 |
| Chisso Corporation | 70 |
9 |
| FUJIFILM Corporation | 27102 |
7 |
| Jiangsu Hecheng Display Technology Co., Ltd. | 91 |
6 |
| Sharp Corporation | 10015 |
5 |
| Nitto Denko Corporation | 7879 |
4 |
| Essilor International (compagnie Generale D'optique) | 2918 |
4 |
| Sharp Kabushiki Kaisha | 18957 |
4 |
| Rolic Technologies AG | 37 |
3 |
| Nikon Corporation | 7162 |
2 |
| AGC Seimi Chemical Co., Ltd. | 71 |
2 |
| Boe Technology Group Co., Ltd. | 35384 |
2 |
| Adeka Corporation | 1333 |
2 |
| Kymeta Corporation | 253 |
2 |
| Kyushu University, National University Corporation | 1572 |
2 |
| Shijiazhuang Chengzhi Yonghua Display Material Co., Ltd. | 48 |
2 |
| Other owners | 24 |