Global Patent Index - EP 1242324 A1

EP 1242324 A1 2002-09-25 - PURE FUSED SILICA, FURNACE AND METHOD

Title (en)

PURE FUSED SILICA, FURNACE AND METHOD

Title (de)

REINES, GESCHMOLZENES SILIZIUMDIOXID UND VERFAHREN

Title (fr)

SILICE PURE FONDUE, FOUR ET PROCEDE CORRESPONDANTS

Publication

EP 1242324 A1 (EN)

Application

EP 00961725 A

Priority

  • US 0024776 W
  • US 15342299 P

Abstract (en)

[origin: WO0117919A1] An article of relatively pure silica, and a furnace (50) and method of producing the article. The article is produced by collecting molten silica particles (30) in a refractory furnace (50) in which at least a portion of the refractory (32) has been exposed to a halogen-containing gas to react with contaminating metal ions in the refractory (32).

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

C03B 37/018; C03B 37/01

IPC 8 full level (invention and additional information)

C03B 20/00 (2006.01); C01B 33/12 (2006.01); C03B 5/43 (2006.01); C03B 8/04 (2006.01); C03B 19/14 (2006.01); C04B 35/10 (2006.01); F27B 17/00 (2006.01); F27D 1/00 (2006.01); F27D 1/02 (2006.01); F27D 3/00 (2006.01); F27B 9/26 (2006.01)

CPC (invention and additional information)

C04B 35/10 (2013.01); C03B 19/1407 (2013.01); F27B 17/00 (2013.01); F27D 1/0006 (2013.01); F27D 3/0033 (2013.01); C03B 2201/02 (2013.01); C03B 2201/03 (2013.01); C03B 2201/07 (2013.01); C03B 2201/42 (2013.01); C03B 2207/32 (2013.01); C03B 2207/50 (2013.01); F27B 9/26 (2013.01); F27D 1/0043 (2013.01)

Citation (search report)

See references of WO 0117919A1

Designated contracting state (EPC)

AT BE CH CY DE FR GB LI NL

EPO simple patent family

WO 0117919 A1 20010315; AU 7364000 A 20010410; CN 1387499 A 20021225; EP 1242324 A1 20020925; JP 2003508337 A 20030304

INPADOC legal status


2006-11-22 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20060401

2004-05-19 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): AT BE CH CY DE FR GB LI NL

2002-09-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020410

2002-09-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

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

2002-09-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI