Medicinal and/or nutritional microcapsules for oral administration
US6022562A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 1995 |
| Grant date | Feb 8, 2000 |
| Priority date | — |
| Expiry date | Oct 17, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5047
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to microcapsules for the oral administration of medicinal and/or nutritional active principles (AP), which are smaller than or equal to 1000 .mu.m in size. These microcapsules consist of particles which are coated with a coating material consisting of a mixture of a film-forming polymer derivative, a hydrophobic plasticizer, a functional agent and a nitrogen-containing polymer. These microcapsules are also characterized by their ability to remain in the small intestine for a long time (at least 5 hours) and to allow, during the residence, release and absorption of the AP. The invention also relates to a process for the production of the said microcapsules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.