Weighted collagen microsponge for immobilizing bioactive material
US4861714A · kind A · utility
88Cited by
72References
21Claims
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Key dates
| Filing date | Apr 4, 1985 |
| Grant date | Aug 29, 1989 |
| Priority date | — |
| Expiry date | Apr 4, 2005 |
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.