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Denis R. A. Ridyard

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  • Hazel Grove, GB
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Patents Grantslast 30 patents

  • Information Patent Grant

    Amine pyrazole nickel phthalocyanine dyes for coloration
    • Patent number 6,271,355
    • Issue date Aug 7, 2001
    • Imperial Chemical Industries PLC
    • Denis Robert Annesley Ridyard
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Azopyridone dyes
    • Patent number 5,175,261
    • Issue date Dec 29, 1992
    • Imperial Chemical Industries PLC
    • Denis R. A. Ridyard
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Triphenodioxazine reactive dyes having sulphonate ester groups
    • Patent number 5,171,852
    • Issue date Dec 15, 1992
    • Imperial Chemical Industries PLC
    • Andrew H. M. Renfrew
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Reactive dyes
    • Patent number 5,019,134
    • Issue date May 28, 1991
    • Imperial Chemical Industries PLC
    • Denis R. A. Ridyard
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Disperse dyes: nitro-thiophene azo dyes for bright blue shades on p...
    • Patent number 4,881,943
    • Issue date Nov 21, 1989
    • Imperial Chemical Industries PLC
    • David Brierley
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
  • Information Patent Grant

    Water soluble monoazo dyes for nylon
    • Patent number 4,330,468
    • Issue date May 18, 1982
    • Imperial Chemical Industries, Limited
    • David Brierley
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Coloration process: mixed dyes for differential-dyeing nylon mixtures
    • Patent number 4,213,759
    • Issue date Jul 22, 1980
    • Imperial Chemical Industries Limited
    • Denis R. A. Ridyard
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Water-soluble reactive monoazo dye containing a nonylphenoxy, chlor...
    • Patent number 4,145,340
    • Issue date Mar 20, 1979
    • Imperial Chemical Industries Limited
    • Denis R. A. Ridyard
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...