- All sections
- A - Human necessities
- A61K - Preparations for medical, dental or toiletry purposes
- A61K 31/352 - Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having six-membered rings with one oxygen as the only ring hetero atom condensed with carbocyclic rings, e.g. cannabinols, methantheline
Patent holdings for IPC class A61K 31/352
Total number of patents in this class: 7083
10-year publication summary
|
368
|
422
|
530
|
615
|
767
|
802
|
819
|
672
|
470
|
329
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Jazz Pharmaceuticals Research UK Limited | 227 |
75 |
| The General Hospital Corporation | 4797 |
54 |
| Buzzelet Development and Technologies Ltd | 97 |
53 |
| GW Research Limited | 181 |
46 |
| The Regents of the University of California | 20289 |
44 |
| Nicoventures Trading Limited | 4269 |
41 |
| Nordiccan A/S | 50 |
40 |
| Canopy Growth Corporation | 222 |
38 |
| Société des Produits Nestlé S.A. | 9886 |
36 |
| HEXO Operations Inc. | 183 |
34 |
| Natural Extraction Systems, LLC | 110 |
32 |
| Yissum Research Development Company of The Hebrew University of Jerusalem Ltd. | 1349 |
32 |
| GW Pharma Limited | 58 |
31 |
| Centre National de La Recherche Scientifique | 10693 |
27 |
| Provectus Pharmatech, Inc. | 51 |
27 |
| Humanetics Corporation | 51 |
26 |
| Otsuka Pharmaceutical Co., Ltd. | 1508 |
23 |
| Amazentis SA | 169 |
22 |
| Syqe Medical Ltd. | 88 |
22 |
| Duke University | 3107 |
21 |
| Other owners | 6359 |