- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 309/19 - Sulfonic acids having sulfo groups bound to acyclic carbon atoms of a saturated carbon skeleton containing rings
Patent holdings for IPC class C07C 309/19
Total number of patents in this class: 111
10-year publication summary
|
6
|
12
|
8
|
15
|
9
|
9
|
11
|
4
|
2
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Sumitomo Chemical Company, Limited | 8808 |
16 |
| JSR Corporation | 2476 |
15 |
| Shin-Etsu Chemical Co., Ltd. | 5132 |
12 |
| Tokyo Ohka Kogyo Co., Ltd. | 1481 |
11 |
| FUJIFILM Corporation | 27102 |
10 |
| BELLUS Health Inc. | 19 |
5 |
| Rohm and Haas Electronic Materials LLC | 637 |
4 |
| Janssen Pharmaceutica N.V. | 3839 |
3 |
| Pfizer Inc. | 3322 |
3 |
| Alzheon, Inc. | 40 |
3 |
| Zoetis Services LLC | 1537 |
3 |
| International Business Machines Corporation | 60644 |
2 |
| Actavis Group PTC ehf | 566 |
2 |
| San-Apro Limited | 73 |
2 |
| Toyo Gosei Co., Ltd. | 111 |
2 |
| Samsung Electronics Co., Ltd. | 131630 |
1 |
| Merck Patent GmbH | 5909 |
1 |
| Allergan, Inc. | 2600 |
1 |
| Anadys Pharmaceuticals, Inc. | 34 |
1 |
| Central Glass Company, Limited | 1244 |
1 |
| Other owners | 13 |