- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 41/03 - Preparation of ethers from oxiranes by reaction of an oxirane ring with a hydroxy group
Patent holdings for IPC class C07C 41/03
Total number of patents in this class: 231
10-year publication summary
|
20
|
12
|
13
|
9
|
12
|
14
|
12
|
17
|
9
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stepan Company | 567 |
14 |
| Dow Global Technologies LLC | 10147 |
12 |
| Kao Corporation | 4843 |
10 |
| BASF SE | 19740 |
8 |
| Sumitomo Chemical Company, Limited | 8808 |
6 |
| Dow Global Technologies Inc. | 1055 |
5 |
| Covestro LLC | 577 |
5 |
| Lyondell Chemical Technology, L.P. | 292 |
5 |
| E. I. du Pont de Nemours and Company | 4345 |
4 |
| Cognis IP Management GmbH | 708 |
4 |
| Eastman Chemical Company | 2239 |
4 |
| Nippon Shokubai Co., Ltd. | 1487 |
4 |
| Saint-Gobain Ceramics & Plastics, Inc. | 812 |
4 |
| Zhejiang Huangma Technology Co., Ltd | 26 |
4 |
| Zhejiang Huangma New Materials Technology Co.,Ltd | 8 |
4 |
| Shangyu Huangma Surface Activated Reagent Research Institute Co., Ltd. | 13 |
4 |
| Zhejiang Lukean Chemical Co., Ltd. | 13 |
4 |
| Specialty Operations France | 563 |
4 |
| Merck Patent GmbH | 5909 |
3 |
| Northwestern University | 3112 |
3 |
| Other owners | 120 |