Static and ultrasonic methods for measuring compressibility and density of small particles
US7844405B2 · kind B2 · utility
1Cited by
3References
21Claims
0Family size
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Key dates
| Filing date | Sep 8, 2006 |
| Grant date | Nov 30, 2010 |
| Priority date | — |
| Expiry date | Nov 30, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2015/0096
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of measuring the compressibility, and/or the density, of small particles, and especially nano-particles, in suspension is described. The static method uses steady pressures and measures the d-c (static) compressibility of particles. The ultrasonic method utilizes an ultrasonic pulsed doppler system to measure the compressibility of particles at ultrasonic frequencies, which may differ from static values. These methods can also be used together to provide overlapping and complementary information about the particles. In addition, the ultrasonic pulsed doppler system also provides a way to measure particle density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.