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:
Oct. 19, 2021
Filed:
Sep. 02, 2015
Tecan Trading Ag, Mannedorf, CH;
Thomas Perroud, Lexington, MA (US);
Dan Tran, San Jose, CA (US);
Daniel Hoffmeyer, San Jose, CA (US);
Tiffany Lay, San Jose, CA (US);
Manjeet Dhindsa, San Jose, CA (US);
Thomas Perroud, Lexington, MA (US);
Dan Tran, San Jose, CA (US);
Daniel Hoffmeyer, San Jose, CA (US);
Tiffany Lay, San Jose, CA (US);
Manjeet Dhindsa, San Jose, CA (US);
TECAN TRADING AG, Mannedorf, CH;
Abstract
A digital microfluidics system with electrodes attached to a substrate and covered by a hydrophobic surface, and a control unit for manipulating liquid droplets by electrowetting; providing in close proximity to electrodes a magnetic conduit for directing a magnetic field of a backing magnet to the first hydrophobic surface; providing on the hydrophobic surface a liquid droplet that has magnetically responsive beads; moving by electrowetting the liquid droplet with the magnetically responsive beads until a part of which is placed atop of the magnetic conduit; actuating the backing magnet of the magnetic conduit and attracting/concentrating magnetically responsive beads; and while actuating the backing magnet, moving by electrowetting the liquid droplet with decreased number of magnetically responsive beads away from the specific magnetic conduit. Also disclosed are a method for suspending magnetically responsive beads in liquid portions or droplets in digital microfluidics and a disposable cartridge to carry out the methods.