- All sections
- C - Chemistrymetallurgy
- C07D - Heterocyclic compounds
- C07D 495/22 - Heterocyclic compounds containing in the condensed system at least one hetero ring having sulfur atoms as the only ring hetero atoms in which the condensed system contains four or more hetero rings
Patent holdings for IPC class C07D 495/22
Total number of patents in this class: 439
10-year publication summary
|
28
|
25
|
33
|
32
|
40
|
32
|
31
|
26
|
27
|
20
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Merck Patent GmbH | 5815 |
31 |
| FUJIFILM Corporation | 29437 |
20 |
| Sumitomo Chemical Company, Limited | 9043 |
19 |
| LG Chem, Ltd. | 17635 |
16 |
| Samsung Electronics Co., Ltd. | 146811 |
14 |
| Raynergy Tek Inc. | 110 |
13 |
| Idemitsu Kosan Co., Ltd. | 4224 |
11 |
| BASF SE | 20940 |
10 |
| Corning Incorporated | 10275 |
10 |
| The Regents of the University of Michigan | 4711 |
9 |
| Arizona Board of Regents on behalf of Arizona State University | 2644 |
9 |
| Eisai R&D Management Co., Ltd. | 1232 |
9 |
| Cambridge Display Technology Limited | 496 |
8 |
| Rohm and Haas Electronic Materials Korea Ltd. | 330 |
7 |
| Duk San Neolux Co., Ltd. | 654 |
6 |
| Peking University | 1313 |
6 |
| Dart NeuroScience, LLC | 49 |
5 |
| The University of Tokyo | 4189 |
5 |
| Georgia Tech Research Corporation | 2744 |
4 |
| Hiroshima University | 563 |
4 |
| Other owners | 223 |