Semi-enteric drug delivery systems and methods for preparing same
US5167964A · kind A · utility
124Cited by
4References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 14, 1992 |
| Grant date | Dec 1, 1992 |
| Priority date | — |
| Expiry date | Feb 14, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5078
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention pertains to semi-enteric drug delivery systems which comprise (a) an inert core, (b) a first coating layer over the core comprising a medicament, and (c) a second coating layer over the first coating layer comprising a mixture of methacrylic acid copolymer, type C, and povidone present in a ratio by weight of from about 2:1 to about 24:1, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.