Trapping and releasing particles carried by gas sample
US11913859B2 · kind B2 · utility
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1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2019 |
| Grant date | Feb 27, 2024 |
| Priority date | — |
| Expiry date | Aug 23, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0053
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to an example aspect of the present invention, there is provided an apparatus comprising a volume for receiving a gas sample; and an ultrasonic transducer; wherein the ultrasonic transducer is caused to generate a standing wave to the volume, said standing wave comprising at least one particle trapping zone for trapping particles carried by the gas sample, and to release particles trapped to the at least particle trapping zone by decreasing power of the standing wave to at least one lower power level and/or switching off the standing wave.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.