Composite membranes for solid phase extractions and reactions
US5529686A · kind A · utility
23Cited by
23References
21Claims
0Family size
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Key dates
| Filing date | May 23, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | May 23, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/528
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A solid phase extraction or chromatographic medium comprises a porous nonwoven fibrous matrix comprising at least one of polytetrafluoroethylene and blown microfibers, and sorptive or reactive hydrophobic siliceous molecular sieve particulates enmeshed in said matrix, the ratio of molecular sieves to matrix being in the range of 40:1 to 1:40.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.