- All sections
- C - Chemistrymetallurgy
- C07F - Acyclic, carbocyclic, or heterocyclic compounds containing elements other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur, selenium or tellurium
- C07F 7/20 - PurificationSeparation
Patent holdings for IPC class C07F 7/20
Total number of patents in this class: 112
10-year publication summary
|
11
|
12
|
4
|
5
|
7
|
5
|
6
|
14
|
3
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2103 |
12 |
| Dow Silicones Corporation | 2012 |
9 |
| Evonik Operations GmbH | 4196 |
9 |
| LG Chem, Ltd. | 17726 |
5 |
| Evonik Degussa GmbH | 1439 |
5 |
| Alcon, Inc. | 5590 |
5 |
| Momentive Performance Materials Inc. | 889 |
5 |
| Shin-Etsu Chemical Co., Ltd. | 5838 |
4 |
| Nata Semiconductor Materials Co., Ltd. | 22 |
4 |
| Dow Corning Corporation | 937 |
3 |
| Tokuyama Corporation | 1444 |
3 |
| Central Glass Company, Limited | 1280 |
2 |
| Citibank, N.A., AS Administrative Agent | 266 |
2 |
| Dow Corning Toray Co., Ltd. | 475 |
2 |
| Jiangsu Nata Opto-Electronic Material Co., Ltd. | 28 |
2 |
| King Faisal University | 921 |
2 |
| Vitec Speciality Chemicals Limited | 3 |
2 |
| Johnson & Johnson Vision Care, Inc. | 1176 |
1 |
| F. Hoffmann-La Roche AG | 7890 |
1 |
| California Institute of Technology | 4006 |
1 |
| Other owners | 33 |