- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/522 - Purines, e.g. adenine having oxo groups directly attached to the heterocyclic ring, e.g. hypoxanthine, guanine, acyclovir
Patent holdings for IPC class A61K 31/522
Total number of patents in this class: 2990
10-year publication summary
|
220
|
218
|
251
|
219
|
266
|
281
|
198
|
241
|
176
|
27
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boehringer Ingelheim International GmbH | 4595 |
136 |
| The Regents of the University of California | 20355 |
35 |
| AstraZeneca AB | 2833 |
34 |
| Ono Pharmaceutical Co., Ltd. | 425 |
33 |
| Gilead Sciences, Inc. | 2134 |
29 |
| Hoffmann-La Roche Inc. | 3602 |
23 |
| Cyrano Therapeutics, Inc. | 40 |
19 |
| Agency for Science, Technology and Research | 3665 |
18 |
| Bristol-myers Squibb Company | 4795 |
17 |
| F. Hoffmann-La Roche AG | 7893 |
17 |
| Institut National de La Sante et de La Recherche Medicale (inserm) | 3080 |
17 |
| Centre National de La Recherche Scientifique | 10801 |
16 |
| University of Pittsburgh - Of the Commonwealth System of Higher Education | 3240 |
16 |
| Nicoventures Trading Limited | 4415 |
16 |
| Novartis AG | 10494 |
15 |
| Evonik Operations GmbH | 4198 |
15 |
| Axcess Global Sciences, LLC | 88 |
14 |
| Dogwood Therapeutics, Inc. | 14 |
13 |
| The Procter & Gamble Company | 21987 |
12 |
| Glaxosmithkline LLC | 533 |
12 |
| Other owners | 2483 |