- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 15/38 - Polycyclic condensed hydrocarbons containing four rings
Patent holdings for IPC class C07C 15/38
Total number of patents in this class: 197
10-year publication summary
|
7
|
14
|
9
|
8
|
9
|
10
|
18
|
22
|
8
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4220 |
53 |
| Universal Display Corporation | 1934 |
16 |
| Samsung Display Co., Ltd. | 35269 |
14 |
| Merck Patent GmbH | 5768 |
12 |
| Canon Kabushiki Kaisha | 7081 |
12 |
| LG Chem, Ltd. | 17656 |
6 |
| SFC Co., Ltd. | 321 |
4 |
| E. I. du Pont de Nemours and Company | 4000 |
3 |
| FUJIFILM Corporation | 29586 |
3 |
| Semiconductor Energy Laboratory Co., Ltd. | 11481 |
3 |
| Amazonia Fitomedicamentos Ltda. | 8 |
3 |
| Kyushu University, National University Corporation | 1659 |
3 |
| UDC Ireland Limited | 472 |
3 |
| LG Display Co., Ltd. | 13820 |
2 |
| Canon Inc. | 40398 |
2 |
| Sumitomo Chemical Company, Limited | 9047 |
2 |
| Board of Regents, The University of Texas System | 5860 |
2 |
| Tsinghua University | 5953 |
2 |
| Toray Industries, Inc. | 6978 |
2 |
| Boe Technology Group Co., Ltd. | 41547 |
2 |
| Other owners | 48 |