- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 491/20 - Spiro-condensed systems
Patent holdings for IPC class C07D 491/20
Total number of patents in this class: 527
10-year publication summary
|
30
|
41
|
34
|
36
|
34
|
38
|
29
|
40
|
31
|
24
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hoffmann-La Roche Inc. | 3478 |
18 |
| Shionogi & Co., Ltd. | 844 |
17 |
| eFFECTOR Therapeutics, Inc. | 69 |
14 |
| Merck Sharp & Dohme LLC | 3753 |
13 |
| Boehringer Ingelheim International GmbH | 4640 |
12 |
| F. Hoffmann-La Roche AG | 7948 |
11 |
| Merck Patent GmbH | 5767 |
11 |
| Vertex Pharmaceuticals Incorporated | 1626 |
11 |
| Pfizer Inc. | 3386 |
10 |
| Bristol-myers Squibb Company | 4849 |
9 |
| Amgen Inc. | 4108 |
9 |
| Glaxosmithkline Intellectual Property Development Limited | 766 |
9 |
| Xenon Pharmaceuticals Inc. | 190 |
8 |
| LG Chem, Ltd. | 17676 |
7 |
| The Regents of the University of Michigan | 4751 |
7 |
| Denali Therapeutics Inc. | 249 |
7 |
| Medshine Discovery Inc. | 598 |
7 |
| Rhodes Technologies | 54 |
7 |
| Oncopia Therapeutics, Inc. | 33 |
7 |
| Novartis AG | 10721 |
6 |
| Other owners | 327 |