- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 381/12 - Sulfonium compounds
Patent holdings for IPC class C07C 381/12
Total number of patents in this class: 572
10-year publication summary
|
33
|
33
|
29
|
27
|
30
|
50
|
39
|
52
|
58
|
37
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Tokyo Ohka Kogyo Co., Ltd. | 1549 |
87 |
| FUJIFILM Corporation | 29305 |
80 |
| Shin-Etsu Chemical Co., Ltd. | 5634 |
77 |
| JSR Corporation | 2515 |
73 |
| Sumitomo Chemical Company, Limited | 9040 |
45 |
| San-Apro Limited | 77 |
24 |
| DuPont Electronic Materials International, LLC | 427 |
20 |
| Central Glass Company, Limited | 1262 |
16 |
| Toyo Gosei Co., Ltd. | 108 |
14 |
| Samsung Electronics Co., Ltd. | 145416 |
10 |
| Changzhou Tronly Advanced Electronic Materials Co., Ltd. | 77 |
7 |
| Changzhou Tronly New Electronic Materials Co.,Ltd. | 76 |
7 |
| BASF SE | 20904 |
5 |
| International Business Machines Corporation | 61207 |
4 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42461 |
4 |
| SK Materials Performance Co., Ltd. | 21 |
4 |
| Tokyo Electron Limited | 12645 |
3 |
| DSM IP Assets B.V. | 5605 |
3 |
| The General Hospital Corporation | 4720 |
3 |
| Adeka Corporation | 1363 |
3 |
| Other owners | 83 |