- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 311/30 - Benzo [b] pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 with aromatic rings attached in position 2 or 3 with aromatic rings attached in position 2 only not hydrogenated in the hetero ring, e.g. flavones
Patent holdings for IPC class C07D 311/30
Total number of patents in this class: 399
10-year publication summary
|
22
|
20
|
11
|
20
|
33
|
30
|
31
|
27
|
28
|
16
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Petra Pharma Corporation | 36 |
12 |
| Floratek Pharma SA | 30 |
10 |
| Hoffmann-La Roche Inc. | 3546 |
7 |
| Emory University | 1664 |
7 |
| Chenguang Biotech Group Co., Ltd. | 64 |
6 |
| Hitachi Chemical Company, Ltd. | 2316 |
5 |
| Beijing Shenogen Pharma Group Ltd. | 20 |
5 |
| Institut National de La Sante et de La Recherche Medicale (inserm) | 3003 |
5 |
| Mcmaster University | 821 |
5 |
| F. Hoffmann-La Roche AG | 7937 |
4 |
| Nitto Denko Corporation | 8358 |
4 |
| Japan Science and Technology Agency | 1274 |
4 |
| Apotex Inc. | 213 |
4 |
| Citrox Biosciences Limited | 25 |
4 |
| Firmenich SA | 1710 |
4 |
| The Hong Kong Polytechnic University | 489 |
4 |
| Ilab | 8 |
4 |
| Sumitomo Pharma Oncology, Inc. | 57 |
4 |
| Centre National de La Recherche Scientifique | 10706 |
3 |
| Alparis, S.A. de C.V. | 19 |
3 |
| Other owners | 295 |