- 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: 1626
10-year publication summary
|
114
|
141
|
127
|
141
|
129
|
125
|
171
|
183
|
147
|
86
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4222 |
274 |
| LG Chem, Ltd. | 17643 |
210 |
| Samsung Display Co., Ltd. | 35100 |
137 |
| Merck Patent GmbH | 5820 |
133 |
| Duk San Neolux Co., Ltd. | 656 |
122 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 264 |
78 |
| SFC Co., Ltd. | 321 |
41 |
| LT Materials Co., Ltd. | 410 |
35 |
| Samsung SDI Co., Ltd. | 8494 |
27 |
| Universal Display Corporation | 1930 |
23 |
| Hodogaya Chemical Co., Ltd. | 433 |
22 |
| Doosan Corporation | 433 |
21 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
20 |
| LG Display Co., Ltd. | 13820 |
18 |
| Semiconductor Energy Laboratory Co., Ltd. | 11471 |
18 |
| DuPont Specialty Materials Korea Ltd. | 290 |
18 |
| UDC Ireland Limited | 474 |
13 |
| Lapto Co., Ltd. | 38 |
11 |
| Crius Technology Group, Inc. | 22 |
11 |
| Material Science Co., Ltd. | 39 |
10 |
| Other owners | 384 |