- 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: 2807
10-year publication summary
|
216
|
234
|
236
|
233
|
282
|
249
|
295
|
305
|
205
|
71
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boehringer Ingelheim International GmbH | 4629 |
126 |
| AstraZeneca AB | 3042 |
39 |
| The Regents of the University of California | 18943 |
37 |
| Gilead Sciences, Inc. | 1879 |
30 |
| Ono Pharmaceutical Co., Ltd. | 454 |
30 |
| Hoffmann-La Roche Inc. | 3060 |
22 |
| Bristol-myers Squibb Company | 5080 |
20 |
| F. Hoffmann-La Roche AG | 7958 |
20 |
| Agency for Science, Technology and Research | 3512 |
17 |
| Dainippon Sumitomo Pharma Co., Ltd. | 234 |
17 |
| Evonik Operations GmbH | 3879 |
17 |
| Centre National de La Recherche Scientifique | 9632 |
16 |
| Novartis AG | 11238 |
15 |
| Institut National de La Sante et de La Recherche Medicale (inserm) | 2360 |
14 |
| Nicoventures Trading Limited | 2898 |
14 |
| Virios Therapeutics, Inc. | 14 |
13 |
| The Procter & Gamble Company | 22178 |
12 |
| Glaxosmithkline LLC | 566 |
12 |
| Cyrano Therapeutics, Inc. | 28 |
12 |
| PX Ing, LLC | 26 |
12 |
| Other owners | 2312 |