- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 421/04 - Heterocyclic compounds containing two or more hetero rings, at least one ring having selenium, tellurium, or halogen atoms as ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring- member bond
Patent holdings for IPC class C07D 421/04
Total number of patents in this class: 50
10-year publication summary
|
8
|
1
|
5
|
4
|
4
|
4
|
4
|
5
|
4
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 157946 |
10 |
| Samsung Display Co., Ltd. | 38676 |
5 |
| China Medical University | 152 |
4 |
| The University Court of the University of Edinburgh | 489 |
3 |
| DuPont Specialty Materials Korea Ltd. | 305 |
3 |
| The University of Toledo | 433 |
2 |
| Hangzhou Jennifer Biotech Co., Ltd. | 5 |
2 |
| Sony Corporation | 30158 |
1 |
| CalciMedica, Inc. | 92 |
1 |
| Cayman Chemical Company, Incorporated | 64 |
1 |
| Duk San Neolux Co., Ltd. | 703 |
1 |
| Essilor International (compagnie Generale D'optique) | 2995 |
1 |
| Georgia State University Research Foundation, Inc. | 357 |
1 |
| Luminescence Technology Corporation | 30 |
1 |
| National Tsing Hua University | 1265 |
1 |
| Shanghai Ai Qi Ecological Technology Co., Ltd. | 10 |
1 |
| South China Agricultural University | 153 |
1 |
| Sun Yat-sen University | 731 |
1 |
| Universidad Nacional Autonoma de Mexico | 144 |
1 |
| University of Connecticut | 880 |
1 |
| Other owners | 8 |