- 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: 921
10-year publication summary
|
105
|
77
|
80
|
70
|
51
|
60
|
56
|
29
|
22
|
14
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17929 |
143 |
| Duk San Neolux Co., Ltd. | 703 |
90 |
| Doosan Corporation | 431 |
42 |
| Samsung Display Co., Ltd. | 38676 |
41 |
| Idemitsu Kosan Co., Ltd. | 4241 |
41 |
| Merck Patent GmbH | 5729 |
35 |
| Samsung SDI Co., Ltd. | 10624 |
34 |
| Universal Display Corporation | 2088 |
25 |
| Rohm and Haas Electronic Materials Korea Ltd. | 332 |
24 |
| Semiconductor Energy Laboratory Co., Ltd. | 11834 |
22 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 318 |
18 |
| LT Materials Co., Ltd. | 444 |
13 |
| Samsung Electronics Co., Ltd. | 157946 |
12 |
| Cheil Industries Inc. | 811 |
11 |
| FUJIFILM Corporation | 30516 |
8 |
| Duksan High Metal Co., Ltd. | 60 |
8 |
| LMS Co., Ltd. | 242 |
7 |
| DuPont Specialty Materials Korea Ltd. | 305 |
7 |
| LG Display Co., Ltd. | 14964 |
6 |
| SK Chemicals Co., Ltd. | 648 |
6 |
| Other owners | 328 |