Global Patent Index - EP 1315864 A1

EP 1315864 A1 2003-06-04 - PROCESS FOR CONTROLLING THE BRIGHTNESS OF PAPER PRODUCTS

Title (en)

PROCESS FOR CONTROLLING THE BRIGHTNESS OF PAPER PRODUCTS

Title (de)

VERFAHREN ZUR KONTROLLE DER HELLIGKEIT VON PAPIERPRODUKTEN

Title (fr)

PROCESSUS PERMETTANT DE MAITRISER LA CLARTE DE PAPIERS

Publication

EP 1315864 A1 (EN)

Application

EP 01961018 A

Priority

  • GB 0021404 A
  • IB 0101608 W

Abstract (en)

[origin: WO0218705A1] A process for shading white paper characterized in that a mixture comprising at least one direct dye or pigment and at least one optical brightener is used, is claimed as well as the mixture and the paper dyed with this method.

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

D21H 17/71

IPC 8 full level (invention and additional information)

D21H 21/28 (2006.01); D21H 21/30 (2006.01)

CPC (invention and additional information)

D21H 21/28 (2013.01); D21H 21/30 (2013.01); D21H 17/72 (2013.01)

Citation (search report)

See references of WO 0218705A1

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 0218705 A1 20020307; BR 0113569 A 20030715; CN 1279242 C 20061011; CN 1464931 A 20031231; EP 1315864 A1 20030604; GB 0021404 D0 20001018; KR 100800933 B1 20080204; KR 20030042458 A 20030528; US 2003188393 A1 20031009; ZA 200300347 B 20040318

INPADOC legal status


2009-08-12 [18W] APPLICATION WITHDRAWN

- Effective date: 20090706

2007-02-14 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20070112

2003-06-04 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20030401

2003-06-04 [AK] DESIGNATED CONTRACTING STATES:

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