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:
Mar. 27, 1990
Filed:
Feb. 27, 1987
Gunter A Hofmann, San Diego, CA (US);
Biotronics, San Diego, CA (US);
Abstract
Small dielectric particles such as biological cells or DNA molecules are suspended in a quantity of liquid within a container. A pair of spaced apart electrodes are immersed in the liquid and a coil surrounds the region between the electrodes. First and second electric signals are applied to the electrodes and the coil, respectively, to thereby generate substantially orthogonal oscillating electric and magnetic fields which are at the same frequency but approximately ninety degrees out of phase. By selecting the frequency, particles having different polarization relaxation frequencies and sizes will migrate at different velocities and thereby sort into various fractions.