- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 309/12 - Sulfonic acids having sulfo groups bound to acyclic carbon atoms of an acyclic saturated carbon skeleton containing oxygen atoms bound to the carbon skeleton containing esterified hydroxy groups bound to the carbon skeleton
Patent holdings for IPC class C07C 309/12
Total number of patents in this class: 230
10-year publication summary
|
14
|
8
|
20
|
11
|
7
|
17
|
15
|
26
|
18
|
23
|
| 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. | 1541 |
39 |
| Shin-Etsu Chemical Co., Ltd. | 5662 |
35 |
| FUJIFILM Corporation | 29399 |
29 |
| JSR Corporation | 2524 |
28 |
| Sumitomo Chemical Company, Limited | 9047 |
23 |
| DuPont Electronic Materials International, LLC | 429 |
16 |
| Central Glass Company, Limited | 1267 |
10 |
| Toyo Gosei Co., Ltd. | 108 |
9 |
| Samsung Electronics Co., Ltd. | 146346 |
7 |
| Rohm and Haas Electronic Materials LLC | 153 |
3 |
| Merck Patent GmbH | 5823 |
2 |
| Clariant International Ltd. | 935 |
2 |
| Ecolab Inc. | 401 |
2 |
| SK Materials Performance Co., Ltd. | 21 |
2 |
| L'OREAL, Société Anonyme | 15516 |
1 |
| Unilever PLC | 3194 |
1 |
| Unilever N.V. | 3101 |
1 |
| Conopco, Inc. | 5032 |
1 |
| BASF SE | 20915 |
1 |
| LG Chem, Ltd. | 17638 |
1 |
| Other owners | 17 |