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Class Information
Number: 8/919
Name: Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers > Natural fiber dyeing > Paper
Description: Subject matter involving dyeing or paper.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7531009 |
6-azo-5,5'-dihydroxy-7,7'-disulfo-2-2' dinaphthylamine derivatives |
May. 12, 2009 |
| 7527657 |
Liquid preparation of a copper phthalocyanine dye |
May. 5, 2009 |
| 7351808 |
Anionic monoazo dyes |
Apr. 1, 2008 |
| 7166710 |
Cationic dimeric dyes |
Jan. 23, 2007 |
| 7078497 |
Disazo dyes, and copper complexes thereof, for dyeing paper |
Jul. 18, 2006 |
| 7066969 |
Dyes incorporating annionic and cationic groups |
Jun. 27, 2006 |
| 6994734 |
Aqueous liquid composition of fluorescent brightener excellent in dyeing characteristics |
Feb. 7, 2006 |
| 6984723 |
Use of copper complexes of disazo dyes for dyeing natural and synthetic material |
Jan. 10, 2006 |
| 6933371 |
Bisazo dyestuffs based on hydroxynaphthalene carboxylic acid |
Aug. 23, 2005 |
| 6893473 |
Whitened fluff pulp |
May. 17, 2005 |
| 6860906 |
Process for preparing solutions of anionic organic compounds |
Mar. 1, 2005 |
| 6858255 |
Thickeners for paper dye compositions |
Feb. 22, 2005 |
| 6846956 |
Triarylmethane dyes |
Jan. 25, 2005 |
| 6723846 |
Triazinylaminostilbene derivative as fluorescent whitening agents |
Apr. 20, 2004 |
| 6660048 |
Aqueous dye solutions |
Dec. 9, 2003 |
| 6635092 |
Dye mixtures |
Oct. 21, 2003 |
| 6630056 |
Color tracing paper |
Oct. 7, 2003 |
| 6569212 |
Phthalocyanine ink-jet dyes |
May. 27, 2003 |
| 6562115 |
Azo dyes and their preparation and use |
May. 13, 2003 |
| 6491731 |
Yellow azo-and azoxystilbene dyes, their preparation and the preparation of storage-stable aqueous concentrates thereof |
Dec. 10, 2002 |
| 6464735 |
Fluorescent whitening agents |
Oct. 15, 2002 |
| 6458169 |
Fluorescent whitening agents |
Oct. 1, 2002 |
| 6365719 |
Bridged disazo compounds |
Apr. 2, 2002 |
| 6350862 |
Reactive dye compounds |
Feb. 26, 2002 |
| 6331626 |
Triazinylaminostilbene compounds |
Dec. 18, 2001 |
| 6320031 |
Monoazo dyes and their preparation and use |
Nov. 20, 2001 |
| 6302923 |
Triphendioxazine compounds |
Oct. 16, 2001 |
| 6281338 |
Mono- and dipotassium salts of azo compounds |
Aug. 28, 2001 |
| 6241789 |
Process for dyeing or printing and novel reactive dyes |
Jun. 5, 2001 |
| 6221114 |
Colorant salts and their use in dyeing polymeric material |
Apr. 24, 2001 |
| 6221113 |
Liquid dyestuff compositions |
Apr. 24, 2001 |
| 6210449 |
Fluorescent whitening agents |
Apr. 3, 2001 |
| 6194554 |
Disazo dyes |
Feb. 27, 2001 |
| 6190422 |
Phthalocyanine ink-jet dyes |
Feb. 20, 2001 |
| 6187059 |
Shading of paper |
Feb. 13, 2001 |
| 6153734 |
Oligomer azo colorants |
Nov. 28, 2000 |
| 6152968 |
Water-soluble Quinacridones |
Nov. 28, 2000 |
| 6153122 |
Triazinylaminostilbene compounds |
Nov. 28, 2000 |
| 6140478 |
Basic azo compounds, their production and use |
Oct. 31, 2000 |
| 6120561 |
Process for the preparation of low-salt, liquid dyestuff preparations |
Sep. 19, 2000 |
| 6086955 |
Phthalocyanine compounds |
Jul. 11, 2000 |
| 6084078 |
Disazo dyestuffs for dyeing cellulosic materials |
Jul. 4, 2000 |
| 6063137 |
Process for dyeing or printing and novel reactive dyes |
May. 16, 2000 |
| 6048969 |
Cationic sulfonic acid dyes |
Apr. 11, 2000 |
| 6033444 |
Shading of paper |
Mar. 7, 2000 |
| 6031083 |
Disazo dyestuffs |
Feb. 29, 2000 |
| 5929215 |
Basic monoazo compounds |
Jul. 27, 1999 |
| 5922085 |
Preparation of a dye for coloring protein-based fibers and cellulose-based materials from the oxidation products of the manufacture of a triphenylmethane dye |
Jul. 13, 1999 |
| 5902454 |
Method of whitening lignin-containing paper pulps |
May. 11, 1999 |
| 5883234 |
Process for dyeing cellulosic materials with disazo dyestuffs |
Mar. 16, 1999 |
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