- All sections
- C - Chemistry; metallurgy
- C07D - Heterocyclic compounds
- C07D 491/048 - Ortho-condensed systems with only one oxygen atom as ring hetero atom in the oxygen-containing ring the oxygen-containing ring being five-membered
Patent holdings for IPC class C07D 491/048
Total number of patents in this class: 2361
10-year publication summary
|
172
|
184
|
206
|
210
|
230
|
216
|
223
|
254
|
274
|
56
|
| 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 |
66 |
| LG Chem, Ltd. | 17205 |
64 |
| Merck Patent GmbH | 5909 |
62 |
| Duk San Neolux Co., Ltd. | 512 |
61 |
| LT Materials Co., Ltd. | 312 |
60 |
| Semiconductor Energy Laboratory Co., Ltd. | 10902 |
57 |
| Rohm and Haas Electronic Materials Korea Ltd. | 546 |
46 |
| Merck Sharp & Dohme LLC | 3689 |
42 |
| Vertex Pharmaceuticals Incorporated | 1581 |
40 |
| Samsung Display Co., Ltd. | 30585 |
39 |
| Universal Display Corporation | 1678 |
34 |
| Boehringer Ingelheim International GmbH | 4629 |
33 |
| Genentech, Inc. | 3742 |
28 |
| Takeda Pharmaceutical Company Limited | 2961 |
26 |
| Novartis AG | 11238 |
25 |
| Bristol-myers Squibb Company | 5080 |
25 |
| Samsung SDI Co., Ltd. | 6671 |
25 |
| Enanta Pharmaceuticals, Inc. | 420 |
21 |
| Astellas Pharma Inc. | 1145 |
20 |
| Duquesne University of the Holy Spirit | 136 |
19 |
| Other owners | 1568 |