Patent · US Expired

Process and device for separating and exhausting gas bubbles from liquids

US7166147B2 · kind B2 · utility

7Cited by

3References

27Claims

0Family size

Assignee

BOEHRINGER INGELHEIM MICROPARTS GMBH · DE

Inventors

Christian Vesper · Dortmund, DE
Ying Yu · Dortmund, DE
Ralf-Peter Peters · Bensberg, DE
Wolfgang Stoeters · Wiesloch, DE

Key dates

Filing date	Sep 30, 2004
Grant date	Jan 23, 2007
Priority date	—
Expiry date	Jul 20, 2025

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D19/0031
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process and a device for separating and exhausting gas bubbles from a flowing liquid, especially in a microfluidic system, are proposed. Radial deflection of the liquid, a preferably annular deaeration chamber from which gas can escape through gas separation material, and a following discharge filter are characteristic. The discharge filter is made of a hydrophilic material which forms pores or small channels. Optionally, there is an inlet filter of the corresponding material upstream of the deaeration chamber.

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