Metal-free formazan dyes

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CPC
C09B50/04

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CCHEMISTRY METALLURGY C09Paints, dyes C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES MORDANTS LAKES C09B50/00Formazane dyes Tetrazolium dyes

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C09B50/04Metal-free formazan dyes

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Patents Grantslast 30 patents

Information Patent Grant
Formazan metal complex
- Patent number 6,645,594
- Issue date Nov 11, 2003
- Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
- Kentaro Yano
- G11 - INFORMATION STORAGE
Information Patent Grant
Assay for lithium using tetra-substituted aryl cyclic formazan dyes
- Patent number 5,051,367
- Issue date Sep 24, 1991
- Eastman Kodak Company
- Mary H. Delton
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Tetra-substituted aryl cyclic formazan dyes
- Patent number 4,892,937
- Issue date Jan 9, 1990
- Eastman Kodak Company
- Mary H. Delton
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...