- 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: 1126
10-year publication summary
|
98
|
83
|
69
|
74
|
73
|
85
|
66
|
69
|
87
|
83
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rigel Pharmaceuticals, Inc. | 538 |
23 |
| Boehringer Ingelheim International GmbH | 4644 |
21 |
| Merck Sharp & Dohme LLC | 3742 |
20 |
| Bristol-myers Squibb Company | 4884 |
19 |
| Novartis AG | 10829 |
16 |
| Takeda Pharmaceutical Company Limited | 2696 |
16 |
| Reviva Pharmaceuticals, Inc. | 45 |
16 |
| Gilead Sciences, Inc. | 2038 |
15 |
| Shionogi & Co., Ltd. | 851 |
13 |
| Taisho Pharmaceutical Co., Ltd. | 870 |
13 |
| AstraZeneca AB | 2900 |
12 |
| Mitsubishi Tanabe Pharma Corporation | 579 |
12 |
| Boehringer Ingelheim Pharma GmbH & Co. Kg | 553 |
11 |
| Sensorion | 27 |
11 |
| The Regents of the University of California | 19943 |
10 |
| Abbvie Inc. | 1800 |
10 |
| Astellas Pharma Inc. | 1091 |
10 |
| Cardioxyl Pharmaceuticals, Inc. | 49 |
10 |
| Epizyme, Inc. | 373 |
9 |
| Daiichi Sankyo Company, Limited | 1874 |
8 |
| Other owners | 851 |