Weighted collagen microsponge for immobilizing bioactive materials
US4863856A · kind A · utility
60Cited by
5References
35Claims
0Family size
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Key dates
| Filing date | Nov 18, 1986 |
| Grant date | Sep 5, 1989 |
| Priority date | — |
| Expiry date | Nov 18, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/54
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
Weighted collagen microsponges having a highly crosslinked collagen matrix are described suitable for use in culturing organisms in motive reactor systems. The microsponges have an open to the surface pore structure, and pore sizes and volumes suitable for immobilizing a variety of bioactive materials. The microsponges also have an average particle size in the range of about 100 to about 1000 microns and a specific gravity above about 1.05.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.