The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2011
Filed:
Feb. 21, 2008
Armen P. Sarvazyan, Lambertville, NJ (US);
Armen P. Sarvazyan, Lambertville, NJ (US);
Artann Laboratories Inc, Trenton, NJ (US);
Abstract
Ultrasound-assisted contactless stirring of liquids in a resonator cell by microparticles is achieved by repeated creating and destruction of nodal patterns associated with standing waves of various resonance frequencies causing continuous movements of microparticles inside the cell. Swept-frequency sonication technique includes using constant or variable rate of frequency change as well as a stepwise change of frequency of the transducer within a predefined range. Other useful provisions include initial detection of the set of resonance frequencies and periodic refreshing of that set. Control systems are described including means to automatically detect the resonance frequencies and maintain the operation of the transducer thereon. Advantageous designs of the apparatus are described for use in microstirring, mixing of liquids using magnetic microbeads, microbubbles, microtiter plates, microarray plates, etc.