- All sections
- C - Chemistrymetallurgy
- C07C - Acyclic or carbocyclic compounds
- C07C 227/34 - Preparation of optical isomers by separation of optical isomers
Patent holdings for IPC class C07C 227/34
Total number of patents in this class: 57
10-year publication summary
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1
|
4
|
5
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0
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4
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0
|
1
|
0
|
2
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0
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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Daiichi Sankyo Company, Limited | 1890 |
6 |
| Sumitomo Chemical Company, Limited | 8968 |
2 |
| Generics [UK] Limited | 107 |
2 |
| Mitsubishi Gas Chemical Company, Inc. | 3624 |
2 |
| Richter Gedeon Nyrt. | 1702 |
2 |
| Shanghai Institute of Materia Medica, Chinese Academy of Sciences | 874 |
2 |
| Zhejiang Huahai Pharmaceutical Co., Ltd. | 219 |
2 |
| Zhejiang Jiuzhou Pharmaceutical Co., Ltd. | 70 |
2 |
| Curia Spain, S.A.U. | 29 |
2 |
| Novartis AG | 10251 |
1 |
| Kaneka Corporation | 4713 |
1 |
| Ajinomoto Co., Inc. | 2281 |
1 |
| Aminologics Co., Ltd. | 15 |
1 |
| API Corporation | 188 |
1 |
| Budapesti Muszaki ES Gazdasagtudomanyi Egyetem | 49 |
1 |
| Chemo Iberica, S.A. | 42 |
1 |
| Council of Scientific & Industrial Research | 1447 |
1 |
| Crystal Pharma, S.A.U. | 31 |
1 |
| Deretil, S.A. | 14 |
1 |
| Divi's Laboratories, Ltd. | 27 |
1 |
| Other owners | 24 |