Porous membrane having hydrophilic and cell growth promotions surface and process
US5037656A · kind A · utility
49Cited by
3References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1989 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Sep 8, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2533/54
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A composite, porous membrane is formed from a porous polymer membrane having desired bulk properties on which is directly coated a cell attachment and/or growth promoting composition and a cross-linked polymer having desired surface properties. The composite membrane retains the porosity of the porous polymeric membrane. In one embodiment, when the substrate is polytetrafluoroethylene the composite is microscopically transparent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.