- 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: 1120
10-year publication summary
|
98
|
83
|
69
|
75
|
73
|
89
|
66
|
71
|
88
|
73
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Rigel Pharmaceuticals, Inc. | 539 |
23 |
| Boehringer Ingelheim International GmbH | 4695 |
21 |
| Merck Sharp & Dohme LLC | 3749 |
20 |
| Bristol-myers Squibb Company | 4878 |
19 |
| Novartis AG | 10867 |
16 |
| Takeda Pharmaceutical Company Limited | 2711 |
16 |
| Reviva Pharmaceuticals, Inc. | 45 |
16 |
| Gilead Sciences, Inc. | 2032 |
14 |
| Shionogi & Co., Ltd. | 860 |
13 |
| Taisho Pharmaceutical Co., Ltd. | 870 |
13 |
| AstraZeneca AB | 2917 |
12 |
| Mitsubishi Tanabe Pharma Corporation | 579 |
12 |
| Boehringer Ingelheim Pharma GmbH & Co. Kg | 583 |
11 |
| Astellas Pharma Inc. | 1087 |
11 |
| Sensorion | 27 |
11 |
| The Regents of the University of California | 19868 |
10 |
| Abbvie Inc. | 1803 |
10 |
| Cardioxyl Pharmaceuticals, Inc. | 49 |
10 |
| Epizyme, Inc. | 370 |
9 |
| Daiichi Sankyo Company, Limited | 1865 |
8 |
| Other owners | 845 |