- 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: 1461
10-year publication summary
|
68
|
114
|
141
|
126
|
140
|
129
|
129
|
171
|
183
|
48
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 3995 |
254 |
| LG Chem, Ltd. | 17205 |
176 |
| Samsung Display Co., Ltd. | 30585 |
127 |
| Merck Patent GmbH | 5909 |
120 |
| Duk San Neolux Co., Ltd. | 512 |
96 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 190 |
62 |
| SFC Co., Ltd. | 277 |
35 |
| Rohm and Haas Electronic Materials Korea Ltd. | 546 |
33 |
| LT Materials Co., Ltd. | 312 |
26 |
| Samsung SDI Co., Ltd. | 6671 |
23 |
| Doosan Corporation | 444 |
21 |
| Universal Display Corporation | 1678 |
21 |
| Hodogaya Chemical Co., Ltd. | 417 |
20 |
| LG Display Co., Ltd. | 11907 |
18 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
17 |
| UDC Ireland Limited | 496 |
14 |
| Crius Technology Group, Inc. | 19 |
11 |
| Lapto Co., Ltd. | 36 |
10 |
| Sumitomo Chemical Company, Limited | 8808 |
9 |
| Luminescence Technology Corporation | 34 |
9 |
| Other owners | 359 |