- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 491/113 - Spiro-condensed systems with two or more oxygen atoms as ring hetero atoms in the oxygen-containing ring
Patent holdings for IPC class C07D 491/113
Total number of patents in this class: 352
10-year publication summary
|
27
|
24
|
27
|
28
|
25
|
17
|
26
|
21
|
29
|
8
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Achillion Pharmaceuticals, Inc. | 165 |
30 |
| Alkermes Pharma Ireland Limited | 271 |
14 |
| Gilead Sciences, Inc. | 2027 |
11 |
| Bristol-myers Squibb Company | 4875 |
8 |
| Arbutus Biopharma Corporation | 177 |
8 |
| Bayer Cropscience AG | 2057 |
7 |
| Astellas Pharma Inc. | 1086 |
7 |
| F. Hoffmann-La Roche AG | 7923 |
6 |
| Merck Patent GmbH | 5850 |
6 |
| Inthera Bioscience AG | 10 |
6 |
| The Regents of the University of California | 19839 |
5 |
| Kinki University | 243 |
5 |
| Nippon Chemiphar Co., Ltd. | 228 |
5 |
| Shionogi & Co., Ltd. | 867 |
5 |
| Merck Sharp & Dohme LLC | 3743 |
5 |
| Janssen Pharmaceutica N.V. | 3413 |
4 |
| Abbvie Inc. | 1803 |
4 |
| Astex Therapeutics Limited | 242 |
4 |
| KalVista Pharmaceuticals Limited | 109 |
4 |
| Kotobuki Pharmaceutical Co., Ltd. | 38 |
4 |
| Other owners | 204 |