- 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: 794
10-year publication summary
|
43
|
49
|
102
|
179
|
152
|
120
|
81
|
73
|
42
|
34
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Amazentis SA | 206 |
46 |
| Canopy Growth Corporation | 212 |
36 |
| HEXO Operations Inc. | 171 |
31 |
| Natural Extraction Systems, LLC | 124 |
14 |
| Pike Therapeutics Inc. | 41 |
14 |
| Kare Chemical Technologies Inc. | 27 |
12 |
| Merck Patent GmbH | 5735 |
11 |
| Crius Technology Group, Inc. | 22 |
11 |
| Nextleaf Solutions Ltd. | 37 |
10 |
| Purisys LLC | 23 |
9 |
| Nalu bio, Inc. | 12 |
9 |
| Symrise AG | 1851 |
8 |
| Emerald Health Therapeutics Canada Inc. | 13 |
8 |
| Charlotte's Web, Inc. | 51 |
7 |
| Nectar Health Sciences Inc. | 8 |
7 |
| Vandria SA | 17 |
7 |
| Novartis AG | 10173 |
5 |
| Chemtor, LP | 66 |
5 |
| Northeastern University | 1300 |
5 |
| Santen Pharmaceutical Co., Ltd. | 593 |
5 |
| Other owners | 534 |