Sustained release composition
US4880628A · kind A · utility
2Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1987 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Feb 20, 2007 |
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. The trace chemical element is exemplified by selenium, cobalt and iodine and the cement is exemplified by a phosphate cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.