Patent · US Active

Liquid router

US7776272B2 · kind B2 · utility

2Cited by

20References

12Claims

0Family size

Assignee

GYROS Patent AB · SE

Inventors

Gunnar Ekstrand · Uppsala, SE
Gunnar Thorsen · Trondheim, NO

Key dates

Filing date	Oct 1, 2004
Grant date	Aug 17, 2010
Priority date	—
Expiry date	Apr 26, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01L2400/0688
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A liquid router that comprises an inlet microconduit that branches into two exit microconduits (microconduit I and II) and is present in a microchannel structure of a microfluidic device which is using centrifugal force created by spinning the device about a spin axis for transporting liquid. The router is characterized in comprising a microcavity in which there are: a lower part comprising two exit openings (exits I and II), and an upper part comprising an inlet opening to which the inlet microconduit (3) is connected, and microconduits I and II which are connected to exits I and II, respectively, and stretch from a shorter radial position to a larger radial position relative to the spin axis. Microconduit II has a reduced hydrophilicity (=reduced apparent wettability) compared to microconduit I.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.