Aseptic collagen concentration process
US5874006A · kind A · utility
3Cited by
10References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1996 |
| Grant date | Feb 23, 1999 |
| Priority date | — |
| Expiry date | Oct 31, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2321/2058
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for the aseptic concentration of collagen from about 0.25% (w/w) suspensions to gels of 15% using vortex flow filtration with a variety of membrane types--ultrafiltration and microfiltration and polymeric and stainless steel is provided. The resulting gels are suitable for use in medical products and/or pharmaceutical formulations. This process achieves high degree of concentration in a closed system and at high flux with minimal trans-membrane pressure drop.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.