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Legal status
Patent not validated
| (51) | INT.CL. | A61M 31/00 | (2006.01) |
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| A61J 7/003 | (2013.01) |
| (11) | Number of the document | 3797818 |
| (13) | Kind of document | T |
| (96) | European patent application number | 19808333.9 |
| Date of filing the European patent application | 2019-05-23 | |
| (97) | Date of publication of the European application | 2021-03-31 |
| (45) | Date of publication and mention of the grant of the patent | 2023-01-18 |
| (46) | Date of publication of the claims translation |
| (86) | Number | PCT/CN2019/088084 |
| Date | 2019-05-23 |
| (87) | Number | WO 2019/223753 |
| Date | 2019-11-28 |
| (30) | Number | Date | Country code |
| 201810503654 | 2018-05-23 | CN |
| (72) |
DONG, Liang Chang , CN
CHEN, Xishan , CN
SHI, Jingmin , CN
ZHANG, Danyong , CN
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| (73) |
Shanghai WD Pharmaceutical Co., Ltd ,
Room 403, Building 1, Lane 720 Cailun Road
Zhangjiang High-Tech Park, Pudong New Area, Shanghai 201203,
CN
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| (54) | CONTROLLED-RELEASE SYSTEM OF ACTIVE PHARMACEUTICAL INGREDIENT AND PREPARATION METHOD THEREFOR |
| CONTROLLED-RELEASE SYSTEM OF ACTIVE PHARMACEUTICAL INGREDIENT AND PREPARATION METHOD THEREFOR |