- 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: 78
10-year publication summary
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3
|
5
|
2
|
4
|
8
|
3
|
3
|
3
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bristol-myers Squibb Company | 4880 |
12 |
| The Regents of the University of California | 19961 |
6 |
| Shionogi & Co., Ltd. | 852 |
5 |
| FUJIFILM Corporation | 29437 |
3 |
| Polnox Corporation | 20 |
3 |
| Casale SA | 613 |
2 |
| Johnson Matthey Public Limited Company | 1866 |
2 |
| The University of North Carolina at Chapel Hill | 2040 |
2 |
| DuPont Electronics, Inc. | 378 |
2 |
| Corteva Agriscience LLC | 2682 |
2 |
| Servier Pharmaceuticals, LLC | 104 |
2 |
| Shenzhen Shenxin Biotechnology Co., Ltd. | 25 |
2 |
| BASF SE | 20940 |
1 |
| Bayer Cropscience AG | 2040 |
1 |
| Daikin Industries, Ltd. | 10027 |
1 |
| DSM IP Assets B.V. | 5585 |
1 |
| Mitsui Chemicals, Inc. | 3222 |
1 |
| JSR Corporation | 2527 |
1 |
| Astellas Pharma Inc. | 1087 |
1 |
| Ciba Holding Inc. | 177 |
1 |
| Other owners | 27 |