C09B 50 - Formazane dyes; Tetrazolium dyes

Patents for C09B 50 - Formazane dyes; Tetrazolium dyes (105)
07/2008
07/15/2008	US7399320 Dyeing, bleaching keratinous fibers (hair); 2-[5-(N-methyl-2-pyridinylidene)-3-methyl-1-formazano]-N-methylpyridinium chloride
04/2008
04/24/2008	US20080092307 Dyeing, bleaching keratinous fibers (hair); 2-[5-(N-methyl-2-pyridinylidene)-3-methyl-1-formazano]-N-methylpyridinium chloride
03/2008
03/27/2008	WO2008035724A1 Squarylium compound, optical recording medium using the same, recording/reproduction method and optical recording apparatus
12/2007
12/26/2007	CN101092520A Blue active dye of formazan, and preparation method
12/25/2007	US7311736 Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetra-azapentamethine compounds
06/2007
06/28/2007	WO2007071688A1 Composition for dyeing keratin fibres with a tetraazapentamethine cationic direct dye, a particular oxidation base and a coupler
12/2006
12/12/2006	CA2192952C Dye compositions for polyamides
07/2006
07/12/2006	EP1103547B1 Formazan metal complex
06/2006
06/27/2006	CA2496706C Formazine dyes
02/2006
02/14/2006	CA2251850C Water-soluble tetrazolium salt compounds
08/2005
08/30/2005	US6936323 Optical recording medium, and method and device using the same
07/2005
07/06/2005	CN1209419C Formazane compounds and methods of dyeing with the same
02/2005
02/10/2005	US20050028300 Use of tetra-azapentamethine compounds as direct dyeing agents and novel tetraazapentamethine compounds
12/2004
12/30/2004	US20040265645 Optical recording medium, and method and device using the same
04/2004
04/22/2004	WO2004005407A3 Tetra-azapentamethine and use thereof for dyeing keratinous fibers
01/2004
01/15/2004	WO2004005407A2 Tetra-azapentamethine and use thereof for dyeing keratinous fibers
01/07/2004	EP1378544A2 Tetraaza-pentamethine derivatives and their application for dyeing keratinous fibres
11/2003
11/26/2003	EP1152039B1 Formazane compounds and methods of dyeing with the same
11/25/2003	US6653454 Formazane compounds and method of dyeing using the same
11/11/2003	US6645594 Formazan metal complex
06/2003
06/25/2003	EP0777703B1 Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same
04/2003
04/22/2003	US6551364 Dye mixtures, 1:2 cobalt complex formazan dyes and their use
03/2003
03/12/2003	CN1401631A Bis (amino carbonylnaphthol) derivs.
09/2002
09/18/2002	EP0963418B1 Steam sterilization process indicator
09/04/2002	CN1090206C Formazan compounds and method of dyeing therewith
09/04/2002	CN1090205C Condensed ring azo compound and its producing method and use
08/2002
08/06/2002	US6428582 Dye mixtures, 1:2 cobalt complex formazan dyes and their use
03/2002
03/06/2002	CN1339051A Formazane compounds and methods of dyeing with the same
11/2001
11/07/2001	EP1152039A1 Formazane compounds and methods of dyeing with the same
08/2001
08/28/2001	US6281339 Addition products of acryloylamino-substituted dyes, and the preparation and use thereof
08/16/2001	US20010014733 Diazotizing the coresponding amine compound; metallization
05/2001
05/30/2001	EP1103547A1 Formazan metal complex
03/2001
03/21/2001	EP1085056A2 Addition products from acryloylamino-substituted dyes, their production and use
12/2000
12/14/2000	WO2000075111A1 Formazan metal complex
11/2000
11/21/2000	US6149863 Exposing the reusable medical equipments to steam and a steam sterilzation indicator comprising a tetrazolium salt that is reduced to a formazan compound or salt and thereby undergoes a color change as a direct result of exposure to steam
08/2000
08/10/2000	WO2000046308A1 Formazane compounds and methods of dyeing with the same
07/2000
07/11/2000	US6086640 Formazan compounds and method of dyeing therewith
03/2000
03/22/2000	CN1248277A Formazan compounds and method of dyeing therewith
01/2000
01/12/2000	EP0760838B1 Dye compositions for polyamides
12/1999
12/21/1999	US6005085 Condensed azo compounds and process for preparing the same
12/15/1999	EP0964033A1 Formazan compounds and method of dyeing therewith
12/15/1999	EP0963418A1 Steam sterilization process indicator
08/1999
08/25/1999	CN1226911A Condensed azo compound and process for producing the same
07/1999
07/13/1999	US5922504 Optical recording elements having recording layers containing mixtures of no k metallized formazan and cyanine dyes
07/13/1999	US5922429 Optical recording elements having recording layers containing mixtures of low k metallized formazan and cyanine dyes
05/1999
05/06/1999	EP0913430A1 Condensed azo compound and process for producing the same
01/1999
01/12/1999	US5858026 Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same
09/1998
09/24/1998	WO1998041580A1 Condensed azo compound and process for producing the same
09/24/1998	CA2255592A1 Condensed azo compound and process for producing the same
09/03/1998	WO1998038252A1 Formazan compounds and method of dyeing therewith
08/1998
08/27/1998	WO1998037157A1 Steam sterilization process indicator
06/1998
06/30/1998	US5773193 Optical recording layers containing no k metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes
04/1998
04/22/1998	EP0837463A1 Optical recording layers containing no K metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes
04/22/1998	EP0837462A1 Optical recording elements having recording layers containing mixtures of low K metallized formazan and cyanine dyes
04/22/1998	EP0837459A1 Optical recording elements having recording layers containing mixtures of no K metallized formazan and cyanine dyes
04/22/1998	EP0837457A1 Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes
04/01/1998	EP0832938A2 Mixtures of symmetrical and unsymmetrical nickel formazan dyes
03/1998
03/24/1998	US5731054 Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes
12/1997
12/09/1997	US5695843 Optical recording media
12/02/1997	US5693589 Thermal imaging recording element
11/1997
11/06/1997	WO1997041177A1 Process for producing the stable modification of formazan colorants
10/1997
10/15/1997	EP0801114A2 Dye compositions for polyamides and reactive dyes
10/14/1997	US5677434 Iron-complexed formazan dyes for polyamide and protein substrates
07/1997
07/23/1997	EP0760838A4 Dye compositions for polyamides
06/1997
06/11/1997	EP0777703A2 Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same
03/1997
03/12/1997	EP0760838A1 Dye compositions for polyamides
02/1997
02/18/1997	US5604004 Optical recording medium using formazan metal complex dye and photo-stabilizing method
01/1997
01/09/1997	WO1996033240A3 Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same
10/1996
10/24/1996	WO1996033240A2 Dicyclic metal complex formazan derivatives, process for producing the same, composition containing the same and dyeing process employing the same
10/08/1996	US5563248 Fiber reactive formazan dyes containing a vinyl sulfonyl reactive group
08/1996
08/28/1996	EP0729139A1 Optical recording medium using formazan metal complex dye and photo-stabilizing method
11/1995
11/30/1995	WO1995032249A1 Dye compositions for polyamides
10/1995
10/10/1995	US5456727 Mixture of at least two dyes having different primary colors
02/1995
02/21/1995	US5391719 Preparation of aminoformazans
11/1994
11/23/1994	EP0625550A1 Dye mixtures, 1:2 cobalt complex formazan dyes and their use
01/1994
01/05/1994	EP0576997A1 Method of preparing aminoformazanes
09/1992
09/22/1992	US5149789 Triazine dyes
06/1992
06/30/1992	CA1304353C Tetra-substituted aryl cyclic formazan dyes
09/1991
09/24/1991	US5051367 Assay for lithium using tetra-substituted aryl cyclic formazan dyes
07/1991
07/02/1991	US5028700 For cotton, wool, polyamide, red, violet
10/1990
10/10/1990	EP0391264A1 Reactive dyes with two or three halogen-N-heterocycles as reactive groups
06/1990
06/27/1990	EP0374815A1 Complex copper formazane compounds, process for their preparation and their use as dyestuffs
06/19/1990	US4935500 Metallized formazan compounds having two fiber reactive groups linked by n-alkyl-containing group
01/1990
01/09/1990	US4892937 Analyzing body fluids for lithium
07/1989
07/26/1989	EP0325389A2 Novel tetra-substituted aryl cyclic formazan dyes
06/1989
06/27/1989	US4843148 Process for the preparation of fluorotriazine using alkali metal fluoride salts
06/06/1989	US4837331 Stabilization of tetrazolium salts with cyclodextrins
03/1989
03/30/1989	DE3829265A1 Method of reducing the content of ionogenic heavy metals during the preparation of metal complex dyes
09/1988
09/20/1988	US4772323 Improved storage and ejection stability
07/1988
07/19/1988	US4758658 Water-soluble formazan dye
08/1987
08/19/1987	EP0233139A2 Reactive dyes, their preparation and their use
07/1987
07/08/1987	EP0228348A2 Process for the preparation of reactive dyes
04/1987
04/22/1987	EP0219232A2 Water-soluble dye
07/1986
07/22/1986	CA1208209A1 Reactive metal formazan blue dye
12/1985
12/03/1985	US4556401 Process for dyeing amide-containing fibre materials
09/1985
09/11/1985	EP0154203A2 Fibre-reactive formazanedyestuffs
05/1985
05/15/1985	EP0141063A2 Process for dyeing fibrous material containing amide groups
12/1984
12/05/1984	EP0127179A1 Stabilization of tetrazolium salt with cyclodextrin
05/1984
05/23/1984	EP0108924A1 Heavy metal-containing formazane dyestuffs, methods for their preparation and their use in the dyeing and printing of fibre materials
02/1984
02/01/1984	EP0099721A1 Reactive metal formazan blue dye

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