Global patent index - EP 1064538 A1

EP 1064538 A1 2001-01-03 - BALANCED ASYMMETRIC ELECTRONIC PULSE PATTERNS FOR OPERATING ELECTRODE-BASED PUMPS

Title (en)

BALANCED ASYMMETRIC ELECTRONIC PULSE PATTERNS FOR OPERATING ELECTRODE-BASED PUMPS

Title (de)

ELEKTRONISCHE AUSGEGLICHENE ASYMMETRISCHE PULSMASTER ZUR BEDIENUNG VON PUMPEN MIT ELEKTRODEN

Title (fr)

DIAGRAMMES D'IMPULSIONS ELECTRONIQUES ASYMETRIQUES, EQUILIBRES, CON US POUR FAIRE FONCTIONNER DES POMPES COMPORTANT DES ELECTRODES

Publication

EP 1064538 A1 (EN)

Application

EP 98910505 A

Priority

US 9805485 W

Abstract (en)

[origin: WO9949306A1] Provided is a method of operating an electrode-based pump to pump a liquid, the method comprising periodically reversing the voltage polarity applied to the electrodes of the pump while maintaining a net flow of liquid in a desired direction. Further provided is an apparatus for pumping liquid with an electrode-based pump comprising: a channel of capillary dimensions; a pump comprising at least two electrodes inserted into the channel; a controller for controlling the voltages applied to the electrodes such that the pumps operate under a sequentially repeated pattern of polarity cycles, and such that over the period of the repeated pattern either (a) a first ratio of a voltage-integrated area (A1) associated with a first polarity to a voltage-integrated area (A2) associated with the other polarity or (b) a second ratio of a charge (q1) carried by the current associated with a first polarity to a charge (q2) carried by the current associated with the other polarity is between about 1:1/2 and about 1/2:1. Additionally provided are apparatuses and methods for electrophoresis.

IPC 1-7 (main, further and additional classification)

G01N 27/26

IPC 8 full level (invention and additional information)

G01N 27/447 (2006.01)

CPC (invention and additional information)

G01N 27/44791 (2013.01); B01J 2219/00853 (2013.01); B01J 2219/00891 (2013.01); B01L 2400/0415 (2013.01)

Citation (search report)

See references of WO 9949306A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE

EPO simple patent family

WO 9949306 A1 19990930; AU 6473298 A 19991018; CA 2284268 A1 19990930; EP 1064538 A1 20010103; JP 2002511149 A 20020409

INPADOC legal status

2004-04-28 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20031001

2001-01-03 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000920

2001-01-03 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): AT BE CH DE DK ES FI FR GB IE IT LI LU NL PT SE