Global Patent Index - EP 1242326 A2

EP 1242326 A2 2002-09-25 - METHOD FOR DRAWING AN OPTICAL FIBER FROM A POROUS PREFORM

Title (en)

METHOD FOR DRAWING AN OPTICAL FIBER FROM A POROUS PREFORM

Title (de)

VERFAHREN ZUM ZIEHEN EINER OPTISCHEN FASER AUS EINER PORÖSEN VORFORM

Title (fr)

PROCEDE DE FABRICATION DE FIBRE OPTIQUE PAR FIBRAGE DIRECT

Publication

EP 1242326 A2 (EN)

Application

EP 00968303 A

Priority

  • US 0016595 W
  • US 35006899 A

Abstract (en)

[origin: WO0104063A2] Method for manufacturing optical fiber comprises the steps of laying down core and cladding materials to form a soot blank, the soot blank including a glass modifier, loading the unconsolidated soot blank into a draw tower, providing a hot zone to heat a portion of the blank to a temperature sufficient to sinter the soot into molten glass, and directly drawing the molten glass into fiber.

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

C03B 37/027; C03B 37/012

IPC 8 full level (invention and additional information)

G02B 6/00 (2006.01); C03B 37/012 (2006.01); C03B 37/014 (2006.01); C03B 37/018 (2006.01); C03B 37/027 (2006.01)

CPC (invention and additional information)

C03B 37/0124 (2013.01); C03B 37/027 (2013.01); C03B 2201/30 (2013.01); C03B 2201/34 (2013.01); C03B 2201/36 (2013.01); C03B 2201/40 (2013.01)

Citation (search report)

See references of WO 0104063A3

Designated contracting state (EPC)

DE FR GB IT

EPO simple patent family

WO 0104063 A2 20010118; WO 0104063 A3 20010426; AU 7824100 A 20010130; CA 2379153 A1 20010118; CN 1360561 A 20020724; EP 1242326 A2 20020925; JP 2003516919 A 20030520

INPADOC legal status


2005-06-01 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20041126

2004-09-01 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040715

2004-05-12 [RBV] DESIGNATED CONTRACTING STATES (CORRECTION)

- Designated State(s): DE FR GB IT

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

- Effective date: 20020104

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

- Kind Code of Ref Document: A2

- 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