Sustained release pharmaceutical dosage forms with minimized pH dependent dissolution profiles
US6811794B2 · kind B2 · utility
74Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 2001 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Jul 4, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K31/165
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A pharmaceutical composition comprising at least one pharmaceutically active agent that is pH dependent, at least one non-pH dependent sustained release agent, and at least one pH dependent agent that increases the dissolution rate of the at least one pharmaceutically active agent at a pH in excess of 5.5. Such compositions have minimized pH-dependent dissolution profiles or pH-independent dissolution profiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.