- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 251/52 - Two nitrogen atoms with an oxygen or sulfur atom attached to the third ring carbon atom
Patent holdings for IPC class C07D 251/52
Total number of patents in this class: 76
10-year publication summary
|
5
|
2
|
5
|
8
|
4
|
3
|
3
|
3
|
2
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bristol-myers Squibb Company | 4757 |
12 |
| The Regents of the University of California | 20815 |
7 |
| Shionogi & Co., Ltd. | 883 |
5 |
| FUJIFILM Corporation | 30594 |
3 |
| Polnox Corporation | 12 |
3 |
| Casale SA | 639 |
2 |
| Johnson Matthey Public Limited Company | 1763 |
2 |
| DuPont Electronics, Inc. | 333 |
2 |
| Corteva Agriscience LLC | 2644 |
2 |
| Servier Pharmaceuticals, LLC | 134 |
2 |
| Shenzhen Shenxin Biotechnology Co., Ltd. | 49 |
2 |
| BASF SE | 21306 |
1 |
| Bayer AG | 3522 |
1 |
| Bayer Cropscience AG | 1836 |
1 |
| Daikin Industries, Ltd. | 10502 |
1 |
| DSM IP Assets B.V. | 5389 |
1 |
| Mitsui Chemicals, Inc. | 3259 |
1 |
| JSR Corporation | 2552 |
1 |
| Astellas Pharma Inc. | 1039 |
1 |
| Consejo Superior de Investigaciones Cientificas (csic) | 1449 |
1 |
| Other owners | 25 |