- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 67/055 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides onto unsaturated carbon-to-carbon bonds with oxidation in the presence of platinum group metals or their compounds
Patent holdings for IPC class C07C 67/055
Total number of patents in this class: 136
10-year publication summary
|
3
|
9
|
9
|
6
|
4
|
4
|
2
|
4
|
12
|
4
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Wacker Chemie AG | 2118 |
19 |
| Lyondell Chemical Technology, L.P. | 242 |
13 |
| Crasus Chemical Inc. | 49 |
11 |
| Celanese International Corporation | 912 |
8 |
| Clariant International Ltd. | 893 |
8 |
| Sud-chemie AG | 123 |
8 |
| Kuraray Co., Ltd. | 3616 |
7 |
| Showa Denko K.K. | 2054 |
6 |
| LyondellBasell Acetyls, LLC | 94 |
5 |
| BASF Corporation | 1680 |
4 |
| Rohm and Haas Company | 2941 |
4 |
| Dow Global Technologies LLC | 11051 |
4 |
| Arkema France | 4230 |
3 |
| Hexion Inc. | 237 |
3 |
| Shell Internationale Research Maatschappij B.V. | 3391 |
2 |
| Evonik Degussa GmbH | 1343 |
2 |
| Clariant Produkte (Deutschland) GmbH | 206 |
2 |
| Eastman Chemical Company | 2112 |
2 |
| JX Nippon Oil & Energy Corporation | 978 |
2 |
| N.E. Chemcat Corporation | 188 |
2 |
| Other owners | 21 |