Global patent index - EP 0888171 A4

EP 0888171 A4 2000-01-05 - ASYMMETRIC SUPPORTED MEMBRANE FOR DIRECT OSMOTIC CONCENTRATION

Title (en)

ASYMMETRIC SUPPORTED MEMBRANE FOR DIRECT OSMOTIC CONCENTRATION

Title (de)

ASYMMETRISCH GETRAGERTE MEMBRAN ZUR DIREKTEN OSMOTISCHEN KONZENTRIERUNG

Title (fr)

MEMBRANE ASYMETRIQUE SUR SUPPORT DESTINEE A LA CONCENTRATION OSMOTIQUE DIRECTE

Publication

EP 0888171 A4 (EN)

Application

EP 97916730 A

Priority

  • US 9703574 W
  • US 61387896 A

Abstract (en)

[origin: WO9733681A1] There is disclosed an asymmetric, hydrophilic, membrane having thin surface layer and a porous support layer having an embedded mesh embedded therein, which membrane is suitable for use in direct osmotic concentration (DOC) but not in reverse osmosis (RO).

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

B01D 63/00; B01D 69/10; B01D 71/12; B01D 71/16; B32B 5/14; B32B 5/18

IPC 8 full level (invention and additional information)

B01D 63/00 (2006.01); B01D 69/10 (2006.01); B01D 71/12 (2006.01); B01D 71/16 (2006.01); B32B 5/02 (2006.01)

CPC (invention and additional information)

B01D 69/10 (2013.01)

Designated contracting state (EPC)

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

EPO simple patent family

WO 9733681 A1 19970918; AU 2527597 A 19971001; AU 724712 B2 20000928; CA 2248256 A1 19970918; EP 0888171 A1 19990107; EP 0888171 A4 20000105; JP 2000506439 A 20000530

INPADOC legal status

2003-01-29 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020726

2002-05-02 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020315

2000-01-05 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 19991123

2000-01-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

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

2000-01-05 [RIC1] CLASSIFICATION (CORRECTION)

- Free Format Text: 7B 01D 63/00 A, 7B 01D 71/12 B, 7B 01D 71/16 B, 7B 32B 5/14 B, 7B 32B 5/18 B, 7B 01D 69/10 B

1999-01-07 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19981012

1999-01-07 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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