Ultrasonically modulated polymeric devices for delivering compositions
US4657543A · kind A · utility
107Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 23, 1984 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | Jul 23, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G67/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition such as a biologically active substance is delivered upon demand from a polymeric matrix by exposing the polymeric matrix containing the composition to ultrasonic energy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.