- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/335 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin
Patent holdings for IPC class A61K 31/335
Total number of patents in this class: 968
10-year publication summary
|
41
|
55
|
59
|
65
|
55
|
56
|
28
|
62
|
77
|
25
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Currax Pharmaceuticals LLC | 69 |
33 |
| Glenmark Specialty S.A. | 73 |
20 |
| The Regents of the University of California | 19812 |
12 |
| Ono Pharmaceutical Co., Ltd. | 430 |
12 |
| The Johns Hopkins University | 5642 |
11 |
| ProCom One, Inc. | 9 |
8 |
| Pfizer Inc. | 3367 |
7 |
| The Trustees of Columbia University in the City of New York | 3558 |
7 |
| Alcon Research, Ltd. | 352 |
7 |
| Canopy Growth Corporation | 219 |
7 |
| Kyushu University, National University Corporation | 1643 |
7 |
| Alcon, Inc. | 5394 |
6 |
| Corsair Pharma, Inc. | 36 |
6 |
| Toko Yakuhin Kogyo Co., Ltd. | 34 |
6 |
| The Board of Trustees of the Leland Stanford Junior University | 6365 |
5 |
| Northwestern University | 3364 |
5 |
| Blanchette Rockefeller Neurosciences Institute | 26 |
5 |
| Nippon Chemiphar Co., Ltd. | 228 |
5 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 820 |
5 |
| Somaxon Pharmaceuticals, Inc. | 11 |
5 |
| Other owners | 789 |