- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 491/044 - Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring
Patent holdings for IPC class C07D 491/044
Total number of patents in this class: 268
10-year publication summary
|
19
|
17
|
23
|
10
|
13
|
17
|
23
|
30
|
35
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sunshine Lake Pharma Co., Ltd. | 599 |
19 |
| Nippon Soda Co., Ltd. | 895 |
6 |
| The Regents of the University of California | 19918 |
5 |
| Genentech, Inc. | 3976 |
5 |
| Astellas Pharma Inc. | 1088 |
5 |
| Enanta Pharmaceuticals, Inc. | 428 |
5 |
| Bristol-myers Squibb Company | 4898 |
4 |
| Boehringer Ingelheim International GmbH | 4650 |
4 |
| Janssen Pharmaceutica N.V. | 3392 |
4 |
| Merck Patent GmbH | 5831 |
4 |
| Sumitomo Chemical Company, Limited | 9046 |
4 |
| King Faisal University | 914 |
4 |
| Zhejiang Hisun Pharmaceutical Co., Ltd. | 276 |
4 |
| Wigen Biomedicine Technology (Shanghai) Co., Ltd. | 124 |
4 |
| Tango Therapeutics, Inc. | 45 |
4 |
| Sandoz AG | 1422 |
3 |
| FUJIFILM Corporation | 29367 |
3 |
| Vertex Pharmaceuticals Incorporated | 1597 |
3 |
| Daicel Corporation | 2344 |
3 |
| Global Blood Therapeutics, Inc. | 183 |
3 |
| Other owners | 172 |