| Patents for C09B 57 - Other synthetic dyes of known constitution (5,224) |
|---|
| 05/04/1976 | US3954743 Fluorescent dispersion dyes |
| 04/27/1976 | US3953452 Perinone dyestuffs |
| 04/20/1976 | US3951965 Bis-triazinyl-amino)-stilbene-disulfonic acid derivatives |
| 04/13/1976 | US3950347 Naphtholactam dyestuffs |
| 04/13/1976 | US3950340 Quinazoline dyes |
| 04/06/1976 | US3948596 Oxidation dye for keratinic fibers containing 2-halo-5-acetaminophenol as a coupler |
| 03/30/1976 | US3947450 Benzoxanthene and benzothioxanthene dicarboxylic acid imide dyestuffs and process for their manufacture |
| 03/30/1976 | US3947412 Process for the manufacture of 2-aryl-vic-triazoles |
| 03/16/1976 | US3944547 Iminoisoindolinone pigments |
| 03/02/1976 | US3941780 Coumarin compounds |
| 03/02/1976 | US3941778 Fluorescent dyes, optical brightener |
| 02/24/1976 | US3940437 Styryl-diphenyl derivatives |
| 02/24/1976 | US3940410 Bis-benzonazoledicarbonitriles |
| 02/17/1976 | US3939154 Pyrazoline derivatives |
| 02/17/1976 | US3939093 Daylight fluorescent pigments |
| 01/27/1976 | US3935226 Substituted phenanthroline pigments |
| 01/20/1976 | US3933847 Method relating to manufacture of coumarin derivatives |
| 01/20/1976 | US3933842 Optical whiteners for textile fibers |
| 01/13/1976 | US3932446 Fluorescent dyes |
| 01/13/1976 | US3932415 Dye lasers |
| 01/13/1976 | US3932413 Process for the preparation of 4'-alkoxy-4-naphthalimido-pyrazolium compounds and intermediates therefor |
| 01/06/1976 | US3931211 Oxazole compounds, process for their manufacture and use thereof |
| 01/06/1976 | US3931186 Process for preparing naphtholyene arylimidazol-peri-dicarboxylic acid imides |
| 01/06/1976 | US3931163 Naphthoquinone derivatives |