Capsules for oral preparations and capsule preparations for oral administration
US6214378A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1999 |
| Grant date | Apr 10, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P37/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
This invention offers capsules for oral preparation which is useful for colon diseases such as colon cancer, ulcerative colitis, constipation and diarrhea and for systemic diseases such as osteoporosis and which does not undergo any change at all in stomach and in small intestine but firstly start to disintegrate upon arriving at large intestine and, at the same time, quickly release the drug therefrom wherein the capsule base therefor is hydroxypropylmethylcellulose (HPMC) or polyethyleneglycol-compounded HPMC, gelatin or agar and, on the surface of said capsule base in which powder or liquid containing a pharmacologically active substance is encapsulated, a double-coated structure comprising an inner layer consisting of a cationic copolymer and an outer layer consisting of anionic copolymer is formed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.