Sustained release microcapsule for water soluble drug
US5271945A · kind A · utility
141Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1991 |
| Grant date | Dec 21, 1993 |
| Priority date | — |
| Expiry date | Aug 15, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2987
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Sustained release microcapsules including a water soluble drug and an organic basic substance as a drug retaining substance of this invention not only have a high rate of incorporation (trapping rate), but also show little initial release so that they can be administered safely and bring about persistent, stable sustained release.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.