Global Patent Index - EP 1264038 A2

EP 1264038 A2 2002-12-11 - PULPING PROCESS

Title (en)

PULPING PROCESS

Title (de)

AUFSCHLUSSVERFAHREN

Title (fr)

PROCEDE DE REDUCTION EN PATE

Publication

EP 1264038 A2 (EN)

Application

EP 01904736 A

Priority

  • EP 01904736 A
  • EP 00850037 A
  • SE 0100257 W
  • US 50138400 A

Abstract (en)

[origin: WO0159202A2] The present invention relates to a process for the removal of lignin from lignocellulose containing material comprising treating the lignocellulose containing material prior to a chemical pulping process with a delignifying gas, wherein the gas comprises chlorine dioxide.

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

D21C 1/00; D21B 1/02; D21C 1/04

IPC 8 full level (invention and additional information)

D21B 1/02 (2006.01); D21C 1/00 (2006.01); D21C 1/04 (2006.01); D21C 3/22 (2006.01)

CPC (invention and additional information)

D21C 1/04 (2013.01); D21C 1/00 (2013.01)

Citation (search report)

See references of WO 0159203A3

Designated contracting state (EPC)

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

EPO simple patent family

WO 0159202 A2 20010816; WO 0159202 A3 20020103; AU 3256001 A 20010820; AU 3256101 A 20010820; AU 778689 B2 20041216; AU 779711 B2 20050210; CA 2399723 A1 20010816; CA 2399772 A1 20010816; EP 1264037 A2 20021211; EP 1264038 A2 20021211; JP 2003522844 A 20030729; JP 2003522845 A 20030729; NO 20023711 A 20021004; NO 20023711 D0 20020806; NO 20023712 A 20021004; NO 20023712 D0 20020806; NZ 520518 A 20040227; WO 0159203 A2 20010816; WO 0159203 A3 20020103

INPADOC legal status


2009-03-04 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20080911

2002-12-11 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020822

2002-12-11 [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 TR

2002-12-11 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

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