- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/501 - PyridazinesHydrogenated pyridazines not condensed and containing further heterocyclic rings
Patent holdings for IPC class A61K 31/501
Total number of patents in this class: 3106
10-year publication summary
|
168
|
194
|
209
|
186
|
211
|
287
|
268
|
229
|
341
|
157
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Bristol-myers Squibb Company | 4896 |
81 |
| Boehringer Ingelheim International GmbH | 4702 |
81 |
| Takeda Pharmaceutical Company Limited | 2703 |
78 |
| Novartis AG | 10963 |
74 |
| F. Hoffmann-La Roche AG | 7912 |
52 |
| Janssen Pharmaceutica N.V. | 3431 |
40 |
| Merck Patent GmbH | 5831 |
38 |
| Hoffmann-La Roche Inc. | 3357 |
37 |
| Merck Sharp & Dohme LLC | 3738 |
35 |
| AstraZeneca AB | 2928 |
34 |
| Boehringer Ingelheim Vetmedica GmbH | 1263 |
34 |
| Gilead Sciences, Inc. | 2018 |
33 |
| Board of Regents, The University of Texas System | 5738 |
31 |
| Pfizer Inc. | 3352 |
28 |
| Genentech, Inc. | 3935 |
27 |
| Amgen Inc. | 4024 |
27 |
| Vanderbilt University | 1863 |
26 |
| Arvinas Operations, Inc. | 219 |
25 |
| Vertex Pharmaceuticals Incorporated | 1589 |
24 |
| Astellas Pharma Inc. | 1083 |
21 |
| Other owners | 2280 |