Global Patent Index - EP 1017484 A1

EP 1017484 A1 2000-07-12 - A PROCESS FOR REPAIRING MEMBRANE IMPERFECTIONS

Title (en)

A PROCESS FOR REPAIRING MEMBRANE IMPERFECTIONS

Title (de)

VERFAHREN ZUM REPARIEREN VON MEMBRANDEFEKTEN

Title (fr)

PROCEDE DE REMISE EN ETAT D'UNE MEMBRANE PRESENTANT DES IMPERFECTIONS

Publication

EP 1017484 A1 (EN)

Application

EP 98940534 A

Priority

  • IL 9800409 W
  • IL 12163297 A

Abstract (en)

[origin: WO9910089A1] The invention provides a process for plugging at least one imperfection found in a membrane comprising applying a solution containing a reactive component in dilute concentration to the surface of the membrane under pressure, the components having low reaction rates at the dilute concentration, wherein at least one reactive component is at least partially entrapped within the imperfection for sufficient time so that a reaction with another reactive component is induced as a result of a higher level of local accumulation and concentration of the components within the imperfection, whereby there are formed covalently linked reaction products within the imperfection thus permanently plugging the same.

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

B01D 65/10; B01D 67/00; B01D 69/12

IPC 8 full level (invention and additional information)

B01D 65/10 (2006.01); B01D 67/00 (2006.01); B01D 69/12 (2006.01)

CPC (invention and additional information)

B01D 67/0088 (2013.01); B01D 65/108 (2013.01)

Citation (search report)

See references of WO 9910089A1

Designated contracting state (EPC)

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

EPO simple patent family

WO 9910089 A1 19990304; AU 8883798 A 19990316; EP 1017484 A1 20000712; IL 121632 A 20000813; IL 121632 D0 19980208; JP 2001513436 A 20010904

INPADOC legal status


2005-10-05 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20050301

2003-01-02 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021112

2000-07-12 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000225

2000-07-12 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

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