Sustained release composition
US4661339A · kind A · utility
2Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1985 |
| Grant date | Apr 28, 1987 |
| Priority date | — |
| Expiry date | Mar 4, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K9/2009
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A sustained release device which comprises a source of at least one trace chemical element incorporated in a cement and releasable therefrom on contact with an aqueous medium. A preferred cement is copper phosphate cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.