- All sections
- C - Chemistry; metallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 67/26 - Preparation of carboxylic acid esters by reacting carboxylic acids or derivatives thereof with a carbon-to-oxygen ether bond, e.g. acetal, tetrahydrofuran with an oxirane ring
Patent holdings for IPC class C07C 67/26
Total number of patents in this class: 111
10-year publication summary
|
6
|
18
|
7
|
4
|
10
|
6
|
1
|
6
|
4
|
3
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Stepan Company | 567 |
10 |
| Mitsubishi Rayon Co., Ltd. | 1003 |
5 |
| Nippon Shokubai Co., Ltd. | 1487 |
5 |
| Mitsubishi Chemical Corporation | 4313 |
4 |
| Clariant International Ltd. | 978 |
3 |
| Cognis IP Management GmbH | 708 |
3 |
| Kawasaki Kasei Chemicals Ltd. | 35 |
3 |
| Rohm GmbH | 299 |
3 |
| Wanhua Chemical Group Co., Ltd. | 286 |
3 |
| Evonik Operations GmbH | 3879 |
3 |
| AstraZeneca AB | 3042 |
2 |
| Evonik Röhm GmbH | 452 |
2 |
| Rohm and Haas Company | 2805 |
2 |
| Dow Global Technologies LLC | 10147 |
2 |
| Dow Global Technologies Inc. | 1055 |
2 |
| Chevron U.S.A. Inc. | 3774 |
2 |
| Idemitsu Kosan Co., Ltd. | 3995 |
2 |
| Kolb Distribution Ltd. | 6 |
2 |
| Mitsubishi Gas Chemical Company, Inc. | 3188 |
2 |
| Nissan Chemical Industries, Ltd. | 1822 |
2 |
| Other owners | 49 |