- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 311/80 - DibenzopyransHydrogenated dibenzopyrans
Patent holdings for IPC class C07D 311/80
Total number of patents in this class: 792
10-year publication summary
|
29
|
43
|
49
|
103
|
179
|
149
|
120
|
80
|
68
|
12
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canopy Growth Corporation | 219 |
43 |
| Amazentis SA | 159 |
39 |
| HEXO Operations Inc. | 197 |
35 |
| Merck Patent GmbH | 5850 |
17 |
| Emerald Health Therapeutics Canada Inc. | 19 |
14 |
| Pike Therapeutics Inc. | 38 |
14 |
| Crius Technology Group, Inc. | 22 |
11 |
| Natural Extraction Systems, LLC | 104 |
10 |
| Nextleaf Solutions Ltd. | 39 |
10 |
| Purisys LLC | 24 |
10 |
| PurCann Pharma Inc. | 19 |
9 |
| Kare Chemical Technologies Inc. | 25 |
9 |
| Nectar Health Sciences Inc. | 11 |
9 |
| Symrise AG | 1719 |
7 |
| Zynerba Pharmaceuticals, Inc. | 65 |
6 |
| Charlotte's Web, Inc. | 51 |
6 |
| Vandria SA | 15 |
6 |
| Novartis AG | 10883 |
5 |
| Chemtor, LP | 61 |
5 |
| Northeastern University | 1177 |
5 |
| Other owners | 522 |