Weighted collagen microsponge for immobilizing bioactive material
US4997753A · kind A · utility
44Cited by
9References
20Claims
0Family size
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Key dates
| Filing date | Aug 14, 1989 |
| Grant date | Mar 5, 1991 |
| Priority date | — |
| Expiry date | Aug 14, 2009 |
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.