Global Patent Index - EP 1007484 A1

EP 1007484 A1 2000-06-14 - METHODS AND APPARATUS FOR PRODUCING LOW FLOW RATES OF FEEDSTOCK VAPORS

Title (en)

METHODS AND APPARATUS FOR PRODUCING LOW FLOW RATES OF FEEDSTOCK VAPORS

Title (de)

VERFAHREN ZUM HERSTELLEN VON DÄMPFE MIT NIEDRIGERN STRÖMUNG

Title (fr)

PROCEDE ET DISPOSITIF PERMETTANT DE PRODUIRE DES VAPEURS DE CHARGE D'ALIMENTATION DE FAIBLE DEBIT

Publication

EP 1007484 A1 (EN)

Application

EP 98933203 A

Priority

  • US 9814018 W
  • US 5331597 P

Abstract (en)

[origin: WO9903787A1] A method and apparatus for producing feedstock vapors utilized in the manufacturing of silica glass is provided. The apparatus includes a means for providing a constant flow of a liquid feedstock (22), a means providing an injector gas (24), a mixer (28), an injector tube (30) having an injector entrance (34) and injector orifice (36), a means for flowing a carrier gas (26), a vaporizer chamber (32) and a vapor feedstock delivery conduit (38) which delivers feedstock vapors to a conversion site where it is converted to a silica glass. The invention produces beneficial low flow rates of feedstock vapors, particularly suited for use in the manufacture of planar optical waveguides and lightwave optical circuits.

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

C03B 8/00; C03B 19/06; C03B 20/00

IPC 8 full level (invention and additional information)

B01J 4/00 (2006.01); B01J 19/26 (2006.01); C03B 8/04 (2006.01); C03B 19/14 (2006.01); C03B 20/00 (2006.01); G02B 6/13 (2006.01)

CPC (invention and additional information)

C03B 19/1415 (2013.01); B01J 4/001 (2013.01); B01J 19/26 (2013.01); B01J 2208/00504 (2013.01); B01J 2208/00548 (2013.01); C03B 2207/85 (2013.01)

Designated contracting state (EPC)

DE ES FR GB IE IT SE

EPO simple patent family

WO 9903787 A1 19990128; AU 727914 B2 20010104; AU 8291398 A 19990210; CA 2295684 A1 19990128; CN 1264352 A 20000823; EP 1007484 A1 20000614; EP 1007484 A4 20000920; JP 2001510136 A 20010731; KR 20010022069 A 20010315; TW 434194 B 20010516

INPADOC legal status


2002-12-18 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20020612

2002-03-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20020201

2000-09-20 [A4] SUPPLEMENTARY SEARCH REPORT

- Effective date: 20000803

2000-09-20 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): DE ES FR GB IE IT SE

2000-09-20 [RIC1] CLASSIFICATION (CORRECTION)

- Free text: 7C 03B 19/14 A, 7C 03B 8/04 B

2000-06-14 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20000218

2000-06-14 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE ES FR GB IE IT SE