- 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: 791
10-year publication summary
|
24
|
33
|
43
|
76
|
126
|
113
|
95
|
69
|
61
|
21
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canopy Growth Corporation | 220 |
43 |
| Amazentis SA | 163 |
41 |
| HEXO Operations Inc. | 186 |
30 |
| Merck Patent GmbH | 5815 |
17 |
| Emerald Health Therapeutics Canada Inc. | 19 |
14 |
| Pike Therapeutics Inc. | 36 |
13 |
| Crius Technology Group, Inc. | 22 |
11 |
| Natural Extraction Systems, LLC | 107 |
10 |
| Nextleaf Solutions Ltd. | 39 |
10 |
| Purisys LLC | 24 |
10 |
| PurCann Pharma Inc. | 17 |
9 |
| Kare Chemical Technologies Inc. | 24 |
9 |
| Nectar Health Sciences Inc. | 11 |
9 |
| Symrise AG | 1727 |
7 |
| Charlotte's Web, Inc. | 50 |
6 |
| Vandria SA | 15 |
6 |
| Novartis AG | 10744 |
5 |
| Chemtor, LP | 62 |
5 |
| Northeastern University | 1193 |
5 |
| Santen Pharmaceutical Co., Ltd. | 600 |
5 |
| Other owners | 526 |