Global Patent Index - EP 1032546 A1

EP 1032546 A1 2000-09-06 - POROUS CERAMIC STRUCTURES AND METHODS OF MAKING POROUS CERAMIC STRUCTURES

Title (en)

POROUS CERAMIC STRUCTURES AND METHODS OF MAKING POROUS CERAMIC STRUCTURES

Title (de)

PORÖSEKERAMISCHE STRUKTUREN UND VERFAHREN ZUR HERSTELLUNG VON PORÖSEN KERAMISCHEN STRUKTUREN

Title (fr)

STRUCTURES CERAMIQUES POREUSES ET PROCEDES DE FABRICATION CORRESPONDANTS

Publication

EP 1032546 A1 (EN)

Application

EP 98945847 A

Priority

  • US 9818285 W
  • US 92360597 A

Abstract (en)

[origin: WO9911582A1] The manufacture of porous ceramic structures such as membranes and filters from preceramic polymer precursors such as polyorganoborosilazanes is disclosed. A method comprising the steps of precipitating a preceramic polymer from a casting solution, then pyrolyzing the ceramic structure to form a porous ceramic is used. Structures with a voids volume of greater than 50 % are obtained with the method. Potential uses for the porous structures include ultrafiltration and nanofiltration.

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

C04B 35/52

IPC 8 full level (invention and additional information)

B01D 39/20 (2006.01); B01D 71/02 (2006.01); C04B 35/56 (2006.01); C04B 38/00 (2006.01); C04B 41/45 (2006.01)

CPC (invention and additional information)

B01D 67/0067 (2013.01); B01D 39/2093 (2013.01); B01D 67/0069 (2013.01); B01D 67/0088 (2013.01); B01D 71/02 (2013.01); C04B 38/0022 (2013.01); C04B 41/4582 (2013.01); B01D 2323/22 (2013.01); B01D 2323/46 (2013.01); B01D 2325/02 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 9911582 A1 19990311; EP 1032546 A1 20000906; EP 1032546 A4 20020320; JP 2001514152 A 20010911

INPADOC legal status


2003-07-02 [18W] WITHDRAWN

- Effective date: 20030422

2002-03-20 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20020205

2002-03-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE FR GB IT

2002-03-20 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 04B 38/00 A, 7C 04B 41/45 B, 7B 01D 71/02 B, 7B 01D 39/20 B

2000-09-06 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000331

2000-09-06 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB IT