- 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: 1712
10-year publication summary
|
141
|
128
|
142
|
130
|
129
|
175
|
182
|
149
|
112
|
75
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 4285 |
269 |
| LG Chem, Ltd. | 17978 |
216 |
| Samsung Display Co., Ltd. | 39154 |
148 |
| Merck Patent GmbH | 5755 |
138 |
| Duk San Neolux Co., Ltd. | 703 |
131 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 327 |
91 |
| LT Materials Co., Ltd. | 441 |
41 |
| SFC Co., Ltd. | 338 |
40 |
| Samsung SDI Co., Ltd. | 10924 |
30 |
| Hodogaya Chemical Co., Ltd. | 435 |
24 |
| Semiconductor Energy Laboratory Co., Ltd. | 11877 |
23 |
| Universal Display Corporation | 2113 |
23 |
| Doosan Corporation | 431 |
21 |
| DuPont Specialty Materials Korea Ltd. | 309 |
21 |
| Rohm and Haas Electronic Materials Korea Ltd. | 332 |
20 |
| LG Display Co., Ltd. | 15100 |
18 |
| UDC Ireland Limited | 507 |
16 |
| Material Science Co., Ltd. | 53 |
15 |
| Lapto Co., Ltd. | 40 |
11 |
| Crius Technology Group, Inc. | 22 |
11 |
| Other owners | 405 |