Patent · US Expired

Injection valve array

US6742544B2 · kind B2 · utility

15Cited by

14References

4Claims

0Family size

Assignee

Symyx Technologies, Inc. · US

Inventors

H. Sam Bergh · San Francisco, US
Daniel Pinkas · Alameda, US
Frank Doffing · Kastellaun, DE
Michael Klaus · Weil am Rhein, DE
Friedhelm Schoenfeld · Mainz, DE

Key dates

Filing date	Mar 6, 2002
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Sep 5, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T137/87893
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A novel gas injection valve for injecting discrete charges of gas into a mobile phase or carrier stream is provided. Injection valves of the invention comprise a plurality of microvalves capable of receiving gas at different pressures and emitting discrete charges of gas at approximately the same pressure. The invention further provides for parallel injection valve arrays capable of injecting multiple samples substantially simultaneously and a method of injecting discrete gas samples at a controlled pressure to a high-resolution gas chromatograph.

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