- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 491/22 - Heterocyclic compounds containing in the condensed ring system both one or more rings having oxygen atoms as the only ring hetero atoms and one or more rings having nitrogen atoms as the only ring hetero atoms, not provided for by groups , , or in which the condensed system contains four or more hetero rings
Patent holdings for IPC class C07D 491/22
Total number of patents in this class: 1062
10-year publication summary
|
45
|
43
|
46
|
47
|
59
|
60
|
85
|
98
|
132
|
94
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd. | 296 |
25 |
| Idemitsu Kosan Co., Ltd. | 4237 |
21 |
| Gilead Sciences, Inc. | 2056 |
21 |
| Merck Patent GmbH | 5767 |
17 |
| LG Chem, Ltd. | 17676 |
13 |
| Immunomedics, Inc. | 260 |
12 |
| Merck Sharp & Dohme LLC | 3753 |
12 |
| Nuvalent, Inc. | 57 |
11 |
| Promega Corporation | 576 |
10 |
| Hangzhou Adcoris Biopharma Co., Ltd. | 18 |
10 |
| Daiichi Sankyo Company, Limited | 1877 |
9 |
| ScinoPharm Taiwan, Ltd. | 131 |
9 |
| Abbvie Inc. | 1806 |
8 |
| Shanghai Hengrui Pharmaceutical Co., Ltd. | 644 |
8 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 834 |
8 |
| Shionogi & Co., Ltd. | 844 |
8 |
| Pinotbio, Inc. | 43 |
8 |
| Minghui Pharmaceutical (Hangzhou) Limited | 33 |
7 |
| Minghui Pharmaceutical (Shanghai) Limited | 34 |
7 |
| Duality Biologics (Suzhou) Co., Ltd. | 44 |
7 |
| Other owners | 831 |