The present invention provides a device and a method for separating particles from fluids using ultrasound, laminar flow, and stationary wave effects comprising a micro-technology channel system with an integrated branching point or branching fork, and a single ultrasound source. One of the characteristics...http://www.google.com.au/patents/US6929750?utm_source=gb-gplus-sharePatent US6929750 - Device and method for separation