- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 209/80 - [b, c]- or [b, d]-condensed
Patent holdings for IPC class C07D 209/80
Total number of patents in this class: 191
10-year publication summary
|
16
|
23
|
9
|
12
|
9
|
14
|
14
|
11
|
13
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4257 |
21 |
| LG Chem, Ltd. | 17950 |
14 |
| Samsung Display Co., Ltd. | 38817 |
13 |
| Semiconductor Energy Laboratory Co., Ltd. | 11855 |
10 |
| Merck Patent GmbH | 5735 |
8 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 323 |
8 |
| Duk San Neolux Co., Ltd. | 703 |
7 |
| Samsung SDI Co., Ltd. | 10719 |
6 |
| UDC Ireland Limited | 506 |
6 |
| Arena Pharmaceuticals, Inc. | 344 |
5 |
| GE Healthcare Limited | 628 |
4 |
| DuPont Specialty Materials Korea Ltd. | 305 |
4 |
| BASF SE | 21306 |
3 |
| Hodogaya Chemical Co., Ltd. | 430 |
3 |
| SFC Co., Ltd. | 336 |
3 |
| Tosoh Corporation | 1417 |
3 |
| LT Materials Co., Ltd. | 445 |
3 |
| Samsung Electronics Co., Ltd. | 158442 |
2 |
| FUJIFILM Corporation | 30594 |
2 |
| Adeka Corporation | 1380 |
2 |
| Other owners | 64 |