Dosage forms comprising polymers comprising different molecular weights
US5326571A · kind A · utility
33Cited by
17References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 4, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Sep 4, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/0004
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A dosage form is disclosed comprising a wall surrounding a compartment, which comprises a first composition comprising a carboxymethylcellulose and a second composition comprising a higher molecular weight carboxymethylcellulose. The first composition comprises a dosage amount of drug that delivers from the dosage form at a controlled rate over time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.