- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/538 - 1,4-Oxazines, e.g. morpholine ortho- or peri-condensed with carbocyclic ring systems
Patent holdings for IPC class A61K 31/538
Total number of patents in this class: 1153
10-year publication summary
|
74
|
63
|
62
|
50
|
60
|
50
|
57
|
83
|
105
|
33
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rigel Pharmaceuticals, Inc. | 512 |
23 |
| Merck Sharp & Dohme LLC | 3719 |
21 |
| Reviva Pharmaceuticals, Inc. | 49 |
20 |
| Bristol-myers Squibb Company | 4821 |
18 |
| Boehringer Ingelheim International GmbH | 4567 |
17 |
| Gilead Sciences, Inc. | 2171 |
17 |
| Takeda Pharmaceutical Company Limited | 2726 |
15 |
| Novartis AG | 10420 |
14 |
| Sensorion | 32 |
14 |
| AstraZeneca AB | 2832 |
13 |
| Taisho Pharmaceutical Co., Ltd. | 861 |
13 |
| Shionogi & Co., Ltd. | 830 |
12 |
| Abbvie Inc. | 1848 |
10 |
| Cardioxyl Pharmaceuticals, Inc. | 46 |
10 |
| Epizyme, Inc. | 365 |
10 |
| Mitsubishi Tanabe Pharma Corporation | 518 |
10 |
| The Regents of the University of California | 20502 |
9 |
| Dana-Farber Cancer Institute, Inc. | 2629 |
8 |
| F. Hoffmann-La Roche AG | 7847 |
7 |
| Boehringer Ingelheim Pharma GmbH & Co. Kg | 453 |
7 |
| Other owners | 885 |