- 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: 1647
10-year publication summary
|
114
|
141
|
127
|
141
|
129
|
125
|
171
|
183
|
148
|
110
|
| 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 |
277 |
| LG Chem, Ltd. | 17706 |
212 |
| Samsung Display Co., Ltd. | 36317 |
142 |
| Merck Patent GmbH | 5752 |
134 |
| Duk San Neolux Co., Ltd. | 668 |
123 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 295 |
83 |
| SFC Co., Ltd. | 324 |
41 |
| LT Materials Co., Ltd. | 414 |
36 |
| Samsung SDI Co., Ltd. | 8901 |
27 |
| Hodogaya Chemical Co., Ltd. | 434 |
23 |
| Universal Display Corporation | 1968 |
23 |
| Doosan Corporation | 435 |
21 |
| Rohm and Haas Electronic Materials Korea Ltd. | 331 |
20 |
| Semiconductor Energy Laboratory Co., Ltd. | 11537 |
19 |
| DuPont Specialty Materials Korea Ltd. | 301 |
19 |
| LG Display Co., Ltd. | 13877 |
18 |
| UDC Ireland Limited | 468 |
13 |
| Lapto Co., Ltd. | 38 |
11 |
| Crius Technology Group, Inc. | 22 |
11 |
| Material Science Co., Ltd. | 42 |
10 |
| Other owners | 384 |