- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 491/147 - Ortho-condensed systems the condensed system containing one ring with oxygen as ring hetero atom and two rings with nitrogen as ring hetero atom
Patent holdings for IPC class C07D 491/147
Total number of patents in this class: 566
10-year publication summary
|
39
|
51
|
54
|
58
|
40
|
50
|
39
|
45
|
59
|
18
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Idemitsu Kosan Co., Ltd. | 3995 |
21 |
| Merck Patent GmbH | 5909 |
13 |
| Amgen Inc. | 3779 |
10 |
| Merck Sharp & Dohme LLC | 3689 |
10 |
| Duk San Neolux Co., Ltd. | 512 |
9 |
| Rohm and Haas Electronic Materials Korea Ltd. | 546 |
9 |
| Eisai R&D Management Co., Ltd. | 1304 |
9 |
| Bristol-myers Squibb Company | 5080 |
8 |
| Janssen Pharmaceutica N.V. | 3839 |
8 |
| Trustees of Boston University | 928 |
8 |
| Xinthera, Inc. | 28 |
7 |
| Hoffmann-La Roche Inc. | 3060 |
6 |
| Samsung Display Co., Ltd. | 30585 |
6 |
| Boehringer Ingelheim International GmbH | 4629 |
6 |
| Pfizer Inc. | 3322 |
6 |
| Konica Minolta, Inc. | 8349 |
6 |
| Illumina Cambridge Limited | 678 |
6 |
| Convalife (Shanghai) Co., Ltd. | 16 |
6 |
| Hangzhou Highlightll Pharmaceutical Co., Ltd. | 10 |
6 |
| Arbutus Biopharma Corporation | 183 |
5 |
| Other owners | 401 |