- 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: 7146
10-year publication summary
|
496
|
618
|
753
|
946
|
946
|
895
|
744
|
514
|
402
|
277
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Jazz Pharmaceuticals Research UK Limited | 260 |
79 |
| The General Hospital Corporation | 4903 |
53 |
| Buzzelet Development and Technologies Ltd | 97 |
52 |
| The Regents of the University of California | 20987 |
47 |
| Nicoventures Trading Limited | 4901 |
42 |
| Société des Produits Nestlé S.A. | 10058 |
37 |
| Canopy Growth Corporation | 209 |
37 |
| Nordiccan A/S | 50 |
37 |
| GW Research Limited | 146 |
36 |
| Yissum Research Development Company of The Hebrew University of Jerusalem Ltd. | 1361 |
36 |
| Natural Extraction Systems, LLC | 124 |
35 |
| Provectus Pharmatech, Inc. | 57 |
33 |
| HEXO Operations Inc. | 171 |
33 |
| Centre National de La Recherche Scientifique | 11143 |
27 |
| GW Pharma Limited | 45 |
27 |
| Amazentis SA | 207 |
26 |
| Humanetics Corporation | 52 |
26 |
| Institut National de La Sante et de La Recherche Medicale (inserm) | 3337 |
23 |
| Otsuka Pharmaceutical Co., Ltd. | 1514 |
23 |
| Duke University | 3192 |
21 |
| Other owners | 6416 |