Sustained release particles
US6120787A · kind A · utility
70Cited by
14References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1998 |
| Grant date | Sep 19, 2000 |
| Priority date | — |
| Expiry date | Apr 17, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1652
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of preparing parenterally administrable sustained release microparticles, which comprises preparing core particles in an aqueous medium that is essentially free from organic solvent, a biologically active substance being entrapped therein during or after said preparation, drying the core particles and coating the same with a release-controlling polymer by air suspension technique so as to create a shell on the core particles without any detrimental exposure of the active substance to organic solvent. Microparticles obtainable by such a method also are provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.