- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 67/303 - Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by hydrogenation of unsaturated carbon-to-carbon bonds
Patent holdings for IPC class C07C 67/303
Total number of patents in this class: 199
10-year publication summary
|
14
|
15
|
14
|
13
|
16
|
11
|
5
|
12
|
9
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| BASF SE | 21147 |
14 |
| Evonik Operations GmbH | 4226 |
9 |
| Evonik Oxeno GmbH & Co. KG | 360 |
8 |
| Hanwha Chemical Corporation | 312 |
7 |
| Hanwha Solutions Corporation | 1016 |
7 |
| ExxonMobil Chemical Patents Inc. | 3857 |
6 |
| Novamont S.p.A. | 381 |
5 |
| The Regents of the University of California | 20502 |
4 |
| Merck Patent GmbH | 5723 |
4 |
| Shin-Etsu Chemical Co., Ltd. | 5911 |
4 |
| Eastman Chemical Company | 2089 |
4 |
| Wilmar Trading Pte. Ltd. | 117 |
4 |
| Industrial Technology Research Institute | 5069 |
3 |
| Conser SpA | 17 |
3 |
| Johnson Matthey Davy Technologies Limited | 488 |
3 |
| Kyushu University, National University Corporation | 1693 |
3 |
| Nippon Chemical Industrial Co., Ltd. | 293 |
3 |
| Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen | 314 |
3 |
| Zhejiang Jiuzhou Pharmaceutical Co., Ltd. | 70 |
3 |
| NGK Insulators, Ltd. | 5171 |
2 |
| Other owners | 100 |