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Class Information
Number: 534/DIG.4
Name: Organic compounds -- part of the class 532-570 series > Azo compounds which are lakes
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6984724 |
Pigmented 1-naphtholsulphonic acid-based monoazo pigments |
Jan. 10, 2006 |
| 6756486 |
Non-migrating metallized disazo green shade yellow pigment |
Jun. 29, 2004 |
| 6469147 |
Preparation of azo colorants in microreactors |
Oct. 22, 2002 |
| 5997628 |
Heat stable laked monoazo pigment compositions |
Dec. 7, 1999 |
| 5973126 |
Azo compounds and process for producing the same |
Oct. 26, 1999 |
| 5965715 |
Bisazo compounds and process for the preparation thereof |
Oct. 12, 1999 |
| 5744590 |
Monoazo pigments |
Apr. 28, 1998 |
| 5428136 |
Water-insoluble azo colorants having two azo groups and a 1,4-bis (acetoacetylamino) benzene coupling component |
Jun. 27, 1995 |
| 5243031 |
Process for the production of monoazo lake pigment coated with water-insoluble rosin and improved in lipophilic nature and water resistance |
Sep. 7, 1993 |
| 5144014 |
Process for production of monoazo lake coated with water-insoluble metal salt of rosin |
Sep. 1, 1992 |
| 5128454 |
.beta.-modified crystalline fed monoazo pigment |
Jul. 7, 1992 |
| 5055564 |
Modified crystalline monoazo lake pigment |
Oct. 8, 1991 |
| 5047517 |
Laked pyrazolone azo pigment, process for its preparation and its use |
Sep. 10, 1991 |
| 4767844 |
Azo lake pigments |
Aug. 30, 1988 |
| 4628082 |
Derivatives of azobarbituric acid or salts or complexes thereof |
Dec. 9, 1986 |
| 4594411 |
Sulfonated monoazo colorant lake obtained by di-azo coupling of 5-acetylamino-2-aminobenzene-1-sulfonic acid with 1-(3'-sulfophenyl)-3-methylphyrazol-5-one |
Jun. 10, 1986 |
| 4527994 |
Process for mass-coloring nylon with 1:2 chromium complex azo dye |
Jul. 9, 1985 |
| 4248635 |
High-hiding calcium color lakes having great full-shade brillance and improved lightfastness |
Feb. 3, 1981 |
| 4167422 |
Laked high molecular weight dyes |
Sep. 11, 1979 |
| 3997523 |
Monoazo pigments |
Dec. 14, 1976 |
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