- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 257/02 - Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
Patent holdings for IPC class C07D 257/02
Total number of patents in this class: 450
10-year publication summary
|
19
|
25
|
32
|
25
|
46
|
30
|
40
|
42
|
31
|
17
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bracco Imaging S.p.A. | 322 |
29 |
| The Johns Hopkins University | 5377 |
21 |
| Bayer Pharma AG | 1096 |
16 |
| Nihon Medi-physics Co., Ltd. | 175 |
14 |
| Novartis AG | 11238 |
12 |
| Kyungpook National University Industry-Academic Cooperation Foundation | 1041 |
12 |
| GE Healthcare AS | 246 |
10 |
| Provincial Health Services Authority | 155 |
9 |
| Guerbet | 190 |
8 |
| Bayer Intellectual Property GmbH | 2671 |
7 |
| Enzychem Lifesciences Corporation | 68 |
7 |
| The Governing Council of The University of Toronto, | 1361 |
6 |
| Memorial Sloan-Kettering Cancer Center | 1789 |
6 |
| Universite de Bretagne Occidentale | 112 |
6 |
| The University of British Columbia | 1432 |
6 |
| Centre National de La Recherche Scientifique | 9632 |
5 |
| JFE Engineering Corporation | 92 |
5 |
| ST Pharm Co., Ltd. | 67 |
5 |
| Fusion Pharmaceuticals Inc. | 66 |
5 |
| Bayer Schering Pharma AG | 460 |
4 |
| Other owners | 257 |