- 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: 6844
10-year publication summary
|
369
|
424
|
495
|
617
|
750
|
941
|
945
|
908
|
707
|
155
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| GW Research Limited | 402 |
113 |
| GW Pharma Limited | 137 |
60 |
| The General Hospital Corporation | 4517 |
58 |
| Canopy Growth Corporation | 270 |
58 |
| HEXO Operations Inc. | 236 |
54 |
| Buzzelet Development and Technologies Ltd | 77 |
51 |
| Nordiccan A/S | 48 |
43 |
| The Regents of the University of California | 18943 |
41 |
| Nicoventures Trading Limited | 2898 |
37 |
| Yissum Research Development Company of The Hebrew University of Jerusalem Ltd. | 1338 |
36 |
| Natural Extraction Systems, LLC | 93 |
31 |
| Société des Produits Nestlé S.A. | 9672 |
29 |
| Humanetics Corporation | 42 |
25 |
| Centre National de La Recherche Scientifique | 9632 |
24 |
| Provectus Pharmatech, Inc. | 43 |
24 |
| Duke University | 2872 |
19 |
| Otsuka Pharmaceutical Co., Ltd. | 1426 |
18 |
| Columbia Care, LLC | 36 |
18 |
| Institut National de La Sante et de La Recherche Medicale (inserm) | 2360 |
17 |
| Syqe Medical Ltd. | 76 |
17 |
| Other owners | 6071 |