- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 307/91 - DibenzofuransHydrogenated dibenzofurans
Patent holdings for IPC class C07D 307/91
Total number of patents in this class: 1620
10-year publication summary
|
115
|
141
|
128
|
142
|
130
|
129
|
174
|
183
|
148
|
72
|
| 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 |
274 |
| LG Chem, Ltd. | 17620 |
210 |
| Samsung Display Co., Ltd. | 34641 |
137 |
| Merck Patent GmbH | 5830 |
131 |
| Duk San Neolux Co., Ltd. | 649 |
118 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 257 |
77 |
| SFC Co., Ltd. | 321 |
41 |
| LT Materials Co., Ltd. | 405 |
35 |
| Samsung SDI Co., Ltd. | 8276 |
26 |
| Hodogaya Chemical Co., Ltd. | 434 |
22 |
| Universal Display Corporation | 1904 |
22 |
| Doosan Corporation | 434 |
21 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
20 |
| LG Display Co., Ltd. | 13438 |
18 |
| Semiconductor Energy Laboratory Co., Ltd. | 11398 |
18 |
| DuPont Specialty Materials Korea Ltd. | 286 |
18 |
| UDC Ireland Limited | 480 |
13 |
| Lapto Co., Ltd. | 38 |
11 |
| Crius Technology Group, Inc. | 22 |
11 |
| Material Science Co., Ltd. | 39 |
10 |
| Other owners | 387 |