- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 307/77 - Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
Patent holdings for IPC class C07D 307/77
Total number of patents in this class: 547
10-year publication summary
|
34
|
49
|
48
|
27
|
27
|
20
|
51
|
34
|
56
|
47
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4223 |
75 |
| LG Chem, Ltd. | 17706 |
41 |
| Semiconductor Energy Laboratory Co., Ltd. | 11537 |
23 |
| LT Materials Co., Ltd. | 414 |
20 |
| Samsung Display Co., Ltd. | 36317 |
17 |
| SFC Co., Ltd. | 324 |
16 |
| Duk San Neolux Co., Ltd. | 668 |
13 |
| Merck Patent GmbH | 5752 |
11 |
| Samsung SDI Co., Ltd. | 8901 |
9 |
| UDC Ireland Limited | 468 |
8 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 295 |
7 |
| JSR Corporation | 2542 |
6 |
| DuPont Specialty Materials Korea Ltd. | 301 |
6 |
| Samsung Electronics Co., Ltd. | 149198 |
5 |
| LG Display Co., Ltd. | 13877 |
5 |
| Sumitomo Chemical Company, Limited | 9109 |
5 |
| Shin-Etsu Chemical Co., Ltd. | 5795 |
5 |
| Siga Technologies, Inc. | 85 |
5 |
| Doosan Corporation | 435 |
4 |
| JNC Corporation | 1507 |
4 |
| Other owners | 262 |