Filter arrangement using elution fluid and method for using the same
US11073450B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 17, 2018 |
| Grant date | Jul 27, 2021 |
| Priority date | — |
| Expiry date | May 7, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2400/049
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A filter arrangement with a top element and a bottom element and a filter element therebetween captures oversized particles on the upper surface of the filter element and tangentially rinses these particles using an elution fluid to provide a concentration of particles in a relatively low volume of fluid for further analysis. In an intermediate step, the particles captured by the filter may be rinsed with a rinsing fluid such as water to pass additional undersized particles through the filter, thereby providing a purer sample. To improve efficiency, check valves may be used for passageways with one-way flow. Additionally, a configuration of three-way stopcocks may also be utilized. Finally, a sandwich arrangement is possible, wherein a single bottom element is sandwiched between two opposing top elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.