- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 209/82 - Carbazoles; Hydrogenated carbazoles
Patent holdings for IPC class C07D 209/82
Total number of patents in this class: 879
10-year publication summary
|
53
|
70
|
105
|
75
|
76
|
71
|
50
|
60
|
54
|
9
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| LG Chem, Ltd. | 17205 |
142 |
| Duk San Neolux Co., Ltd. | 512 |
88 |
| Doosan Corporation | 444 |
42 |
| Samsung Display Co., Ltd. | 30585 |
41 |
| Idemitsu Kosan Co., Ltd. | 3995 |
40 |
| Merck Patent GmbH | 5909 |
32 |
| Samsung SDI Co., Ltd. | 6671 |
32 |
| Rohm and Haas Electronic Materials Korea Ltd. | 546 |
32 |
| Universal Display Corporation | 1678 |
22 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
21 |
| LT Materials Co., Ltd. | 312 |
13 |
| Samsung Electronics Co., Ltd. | 131630 |
12 |
| Shaanxi Lighte Optoelectronics Material Co., Ltd. | 190 |
12 |
| Cheil Industries Inc. | 944 |
11 |
| Duksan High Metal Co., Ltd. | 60 |
8 |
| FUJIFILM Corporation | 27102 |
7 |
| LMS Co., Ltd. | 230 |
7 |
| SK Chemicals Co., Ltd. | 568 |
6 |
| LG Display Co., Ltd. | 11907 |
5 |
| Canon Inc. | 36841 |
5 |
| Other owners | 301 |