- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 221/16 - Ring systems of three rings containing carbocyclic rings other than six-membered
Patent holdings for IPC class C07D 221/16
Total number of patents in this class: 111
10-year publication summary
|
11
|
6
|
6
|
4
|
6
|
3
|
5
|
10
|
3
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merck Sharp & Dohme Corp. | 2217 |
7 |
| Merck Sharp & Dohme LLC | 3752 |
6 |
| Boehringer Ingelheim International GmbH | 4750 |
5 |
| The Trustees of the University of Pennsylvania | 4262 |
5 |
| Novartis AG | 11257 |
4 |
| Astellas Pharma Inc. | 1126 |
4 |
| Bristol-myers Squibb Company | 4865 |
3 |
| Merck & Co., Inc. | 435 |
3 |
| Merck Patent GmbH | 5848 |
3 |
| Novartis Inflammasome Research, Inc. | 10 |
3 |
| Samsung Display Co., Ltd. | 32868 |
2 |
| Massachusetts Institute of Technology | 9921 |
2 |
| Dainippon Sumitomo Pharma Co., Ltd. | 210 |
2 |
| H. Lee Moffitt Cancer Center and Research Institute, Inc. | 897 |
2 |
| Howard University | 184 |
2 |
| Japan Tobacco Inc. | 3488 |
2 |
| Oncotherapy Science, Inc. | 297 |
2 |
| Taro Pharmaceuticals Inc. | 40 |
2 |
| Torrey Pines Institute for Molecular Studies | 34 |
2 |
| Universitat Zurich | 638 |
2 |
| Other owners | 48 |