- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 209/82 - CarbazolesHydrogenated carbazoles
Patent holdings for IPC class C07D 209/82
Total number of patents in this class: 909
10-year publication summary
|
70
|
105
|
75
|
79
|
69
|
48
|
59
|
55
|
29
|
18
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17676 |
143 |
| Duk San Neolux Co., Ltd. | 659 |
90 |
| Doosan Corporation | 433 |
42 |
| Samsung Display Co., Ltd. | 35374 |
41 |
| Idemitsu Kosan Co., Ltd. | 4237 |
41 |
| Merck Patent GmbH | 5767 |
34 |
| Samsung SDI Co., Ltd. | 8622 |
33 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
24 |
| Universal Display Corporation | 1936 |
23 |
| Semiconductor Energy Laboratory Co., Ltd. | 11471 |
19 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 274 |
16 |
| LT Materials Co., Ltd. | 411 |
13 |
| Samsung Electronics Co., Ltd. | 147787 |
12 |
| Cheil Industries Inc. | 847 |
11 |
| Duksan High Metal Co., Ltd. | 60 |
8 |
| DuPont Specialty Materials Korea Ltd. | 292 |
8 |
| FUJIFILM Corporation | 29696 |
7 |
| LMS Co., Ltd. | 240 |
7 |
| SK Chemicals Co., Ltd. | 616 |
6 |
| Genentech, Inc. | 4009 |
5 |
| Other owners | 326 |