- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 67/22 - Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from nitriles
Patent holdings for IPC class C07C 67/22
Total number of patents in this class: 26
10-year publication summary
|
0
|
3
|
3
|
2
|
3
|
0
|
0
|
1
|
0
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Vifor (International) Ltd. | 39 |
5 |
| Rhodia Operations | 1586 |
4 |
| Sumitomo Chemical Company, Limited | 9051 |
2 |
| Roehm GmbH | 77 |
2 |
| Specialty Operations France | 798 |
2 |
| California Institute of Technology | 3988 |
1 |
| The Board of Trustees of the University of Illinois | 2711 |
1 |
| Chiesi Farmaceutici S.p.A. | 968 |
1 |
| Hunan University | 153 |
1 |
| Lonza Ltd. | 613 |
1 |
| Porton Fine Chemicals Ltd. | 5 |
1 |
| Trinseo Europe GmbH | 310 |
1 |
| ZaCh System S.p.A. | 25 |
1 |
| Oriental (Luzhou) Agrochemicals. Co., Ltd. | 15 |
1 |
| Hunan Xiangzhong Pharmaceutical Co., Ltd. | 2 |
1 |
| Oriental(luzhou) Agrochemicals. Co., Ltd | 12 |
1 |
| Other owners | 0 |