- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/536 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and at least one oxygen as the ring hetero atoms, e.g. 1,2-oxazines ortho- or peri-condensed with carbocyclic ring systems
Patent holdings for IPC class A61K 31/536
Total number of patents in this class: 494
10-year publication summary
|
32
|
35
|
34
|
40
|
31
|
36
|
42
|
25
|
30
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Boehringer Ingelheim International GmbH | 4756 |
14 |
| ChemoCentryx, Inc. | 394 |
10 |
| F. Hoffmann-La Roche AG | 7939 |
9 |
| Merck Sharp & Dohme LLC | 3744 |
8 |
| The University of Liverpool | 296 |
7 |
| The Regents of the University of California | 19493 |
6 |
| Bayer Schering Pharma AG | 430 |
6 |
| Amgen Inc. | 3897 |
6 |
| Actelion Pharmaceuticals Ltd | 555 |
6 |
| Cipla Limited | 469 |
6 |
| Wyeth | 500 |
6 |
| Horizon Orphan LLC. | 35 |
6 |
| Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd. | 265 |
6 |
| GABA Therapeutics Inc. | 6 |
6 |
| Novartis AG | 11289 |
5 |
| AstraZeneca AB | 2961 |
5 |
| Boehringer Ingelheim Pharma GmbH & Co. Kg | 660 |
5 |
| Bayer Pharma AG | 1085 |
5 |
| Biocodex | 94 |
5 |
| Cornell University | 3190 |
5 |
| Other owners | 362 |