- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 307/91 - Dibenzofurans; Hydrogenated dibenzofurans
Patent holdings for IPC class C07D 307/91
Total number of patents in this class: 1554
10-year publication summary
|
114
|
141
|
126
|
142
|
129
|
129
|
173
|
183
|
148
|
6
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4106 |
267 |
| LG Chem, Ltd. | 17632 |
205 |
| Samsung Display Co., Ltd. | 32700 |
132 |
| Merck Patent GmbH | 5847 |
122 |
| Duk San Neolux Co., Ltd. | 587 |
102 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 222 |
74 |
| SFC Co., Ltd. | 293 |
38 |
| LT Materials Co., Ltd. | 364 |
33 |
| Samsung SDI Co., Ltd. | 7296 |
23 |
| Universal Display Corporation | 1813 |
22 |
| Doosan Corporation | 435 |
21 |
| Hodogaya Chemical Co., Ltd. | 424 |
20 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
20 |
| LG Display Co., Ltd. | 12875 |
18 |
| Semiconductor Energy Laboratory Co., Ltd. | 11071 |
17 |
| DuPont Specialty Materials Korea Ltd. | 269 |
17 |
| UDC Ireland Limited | 490 |
14 |
| Crius Technology Group, Inc. | 20 |
11 |
| Lapto Co., Ltd. | 37 |
10 |
| Sumitomo Chemical Company, Limited | 8976 |
9 |
| Other owners | 379 |