- 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: 898
10-year publication summary
|
70
|
105
|
77
|
79
|
71
|
50
|
60
|
55
|
29
|
7
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17538 |
143 |
| Duk San Neolux Co., Ltd. | 636 |
89 |
| Doosan Corporation | 432 |
42 |
| Samsung Display Co., Ltd. | 34120 |
41 |
| Idemitsu Kosan Co., Ltd. | 4140 |
40 |
| Merck Patent GmbH | 5831 |
34 |
| Samsung SDI Co., Ltd. | 7960 |
33 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
24 |
| Universal Display Corporation | 1872 |
22 |
| Semiconductor Energy Laboratory Co., Ltd. | 11350 |
20 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 248 |
15 |
| LT Materials Co., Ltd. | 396 |
13 |
| Samsung Electronics Co., Ltd. | 143555 |
12 |
| Cheil Industries Inc. | 903 |
11 |
| Duksan High Metal Co., Ltd. | 60 |
8 |
| DuPont Specialty Materials Korea Ltd. | 283 |
8 |
| FUJIFILM Corporation | 29188 |
7 |
| LMS Co., Ltd. | 238 |
7 |
| SK Chemicals Co., Ltd. | 607 |
6 |
| Genentech, Inc. | 3935 |
5 |
| Other owners | 318 |