- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/551 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having seven-membered rings, e.g. azelastine, pentylenetetrazole having two nitrogens as ring hetero atoms, e.g. clozapine, dilazep
Patent holdings for IPC class A61K 31/551
Total number of patents in this class: 2987
10-year publication summary
|
226
|
222
|
284
|
232
|
230
|
253
|
264
|
253
|
207
|
55
|
| 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 |
62 |
| GW Research Limited | 402 |
43 |
| Novartis AG | 11238 |
38 |
| Merck Sharp & Dohme LLC | 3689 |
38 |
| Dana-Farber Cancer Institute, Inc. | 2455 |
36 |
| Bristol-myers Squibb Company | 5080 |
33 |
| Takeda Pharmaceutical Company Limited | 2961 |
32 |
| Kowa Company, Ltd. | 1172 |
31 |
| Woolsey Pharmaceuticals, Inc. | 57 |
31 |
| F. Hoffmann-La Roche AG | 7958 |
30 |
| Nippon Chemiphar Co., Ltd. | 233 |
30 |
| Alkermes Pharma Ireland Limited | 307 |
24 |
| The Regents of the University of California | 18943 |
23 |
| Neurosearch A/S | 222 |
23 |
| Genentech, Inc. | 3742 |
22 |
| Astellas Pharma Inc. | 1145 |
22 |
| Gilead Sciences, Inc. | 1879 |
21 |
| Janssen Pharmaceutica N.V. | 3839 |
18 |
| Hoffmann-La Roche Inc. | 3060 |
16 |
| Merck Patent GmbH | 5909 |
15 |
| Other owners | 2399 |