Well-less filtration device
US7311880B2 · kind B2 · utility
24Cited by
22References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Dec 25, 2007 |
| Priority date | — |
| Expiry date | Dec 26, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/255
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention provides a well-less filtration device that includes a pre-filter layer; a support layer; and at least one layer of solid phase extraction medium disposed between the pre-filter layer and the support layer. At least a portion of the pre-filter layer, support layer and solid phase extraction medium are ultrasonically welded together to form a pattern of filter cells and land areas with the land areas being disposed between the filter cells. The filter cells of the device may be arranged to conform to a standardized array format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.