Preparation process of sustained release compositions and the compositions thus obtained
US5213812A · kind A · utility
32Cited by
5References
35Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1991 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | Jul 23, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/1647
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a preparation process of particles designed to release an effective amount of active ingredient over a predetermined period of time, said particles comprising one ore more active ingredients in admixture with a bioresorbable and/or biodegradable polymer or copolymer, and the particles thus obtained in a substantially spheroidal form and substantially deprived of active ingredient on the external covering.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.