Capillary blotting pad for molecular transfer to membranes
US5149408A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Apr 29, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D57/02
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A capillary blotting sandwich for transferring soluble macromolecules in a liquid medium from a liquid-permeable matrix to a semi-permeable receiving membrane. The blotting sandwich includes: (i) a liquid-permeable matrix layer comprising soluble macromolecules, said matrix having at least one flat surface, (ii) a semi-permeable membrane sheet layer disposed on said flat surface; (iii) an interlocked hydrophilic absorbent fiber-containing material in the form of a non-woven absorbent felt sheet or pad layer disposed on said semi-permeable membrane, wherein said felt layer facilitates capillary transport of a solution through said membrane, whereby said soluble macromolecules in said matrix layer are caused to migrate to said membrane layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.