- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 491/056 - Ortho-condensed systems with two or more oxygen atoms as ring hetero atoms in the oxygen-containing ring
Patent holdings for IPC class C07D 491/056
Total number of patents in this class: 710
10-year publication summary
|
68
|
40
|
60
|
61
|
50
|
57
|
68
|
67
|
54
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vertex Pharmaceuticals Incorporated | 1576 |
20 |
| Sunshine Lake Pharma Co., Ltd. | 567 |
19 |
| Beijing Scitech-mq Pharmaceuticals Limited | 39 |
15 |
| The Regents of the University of California | 19493 |
13 |
| Betta Pharmaceuticals Co., Ltd. | 175 |
12 |
| Novartis AG | 11289 |
11 |
| Syngenta Crop Protection AG | 4894 |
11 |
| Janssen Pharmaceutica N.V. | 3624 |
10 |
| Arbutus Biopharma Corporation | 189 |
9 |
| Astellas Pharma Inc. | 1122 |
9 |
| Trustees of Boston University | 960 |
9 |
| vTv Therapeutics LLC | 155 |
9 |
| Bristol-myers Squibb Company | 4883 |
8 |
| Pfizer Inc. | 3371 |
8 |
| Cancer Research Technology Limited | 525 |
7 |
| Sunovion Pharmaceuticals Inc. | 297 |
7 |
| Bayer Cropscience AG | 2142 |
6 |
| Actuate Therapeutics, Inc. | 24 |
6 |
| Capella Therapeutics, Inc. | 16 |
6 |
| Global Blood Therapeutics, Inc. | 180 |
6 |
| Other owners | 509 |