Use of interfacially-polymerized membranes in delivery devices
US5876752A · kind A · utility
15Cited by
43References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 3, 1993 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Feb 3, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/5073
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Devices for controlled release of active substances in the form of tablets, capsules and beads comprised of a porous substructure surrounded by one or more interfacial membranes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.