- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 221/22 - Bridged ring systems
Patent holdings for IPC class C07D 221/22
Total number of patents in this class: 232
10-year publication summary
|
17
|
12
|
9
|
19
|
16
|
9
|
10
|
8
|
14
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rensselaer Polytechnic Institute | 800 |
8 |
| Boehringer Ingelheim International GmbH | 4756 |
7 |
| Alkermes Pharma Ireland Limited | 288 |
7 |
| University of Pittsburgh - Of the Commonwealth System of Higher Education | 3038 |
6 |
| SpecGx LLC | 196 |
6 |
| Yunnan Haopy Pharmaceuticals Ltd | 8 |
6 |
| Bristol-myers Squibb Company | 4883 |
5 |
| Merck Patent GmbH | 5847 |
5 |
| Takeda Pharmaceutical Company Limited | 2945 |
5 |
| Purdue Pharma L.P. | 511 |
5 |
| Yale University | 2289 |
5 |
| University of Florida Research Foundation, Inc. | 3952 |
4 |
| Universite de Rouen | 105 |
4 |
| Nippon Soda Co., Ltd. | 884 |
3 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 805 |
3 |
| Southwest Jiaotong University | 144 |
3 |
| The United States of America, as represented by the Secretary, Department of Health and Human Services | 2829 |
3 |
| C4 Theraprutics, Inc. | 47 |
3 |
| Merck Sharp & Dohme LLC | 3744 |
3 |
| F. Hoffmann-La Roche AG | 7939 |
2 |
| Other owners | 139 |