- 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: 287
10-year publication summary
|
17
|
23
|
10
|
13
|
18
|
23
|
31
|
35
|
29
|
13
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sunshine Lake Pharma Co., Ltd. | 631 |
20 |
| Bristol-myers Squibb Company | 4757 |
7 |
| Astellas Pharma Inc. | 1039 |
6 |
| The Regents of the University of California | 20902 |
5 |
| Genentech, Inc. | 4132 |
5 |
| Enanta Pharmaceuticals, Inc. | 427 |
5 |
| Zhejiang Hisun Pharmaceutical Co., Ltd. | 307 |
5 |
| F. Hoffmann-La Roche AG | 7798 |
4 |
| Boehringer Ingelheim International GmbH | 4479 |
4 |
| Janssen Pharmaceutica N.V. | 3147 |
4 |
| Merck Patent GmbH | 5747 |
4 |
| King Faisal University | 936 |
4 |
| Nippon Soda Co., Ltd. | 884 |
4 |
| Wigen Biomedicine Technology (Shanghai) Co., Ltd. | 141 |
4 |
| Tango Therapeutics, Inc. | 63 |
4 |
| Sandoz AG | 1411 |
3 |
| FUJIFILM Corporation | 30689 |
3 |
| Sumitomo Chemical Company, Limited | 8965 |
3 |
| Daicel Corporation | 2562 |
3 |
| Global Blood Therapeutics, Inc. | 166 |
3 |
| Other owners | 187 |