by adding insoluble coloured substances

Patents Grantslast 30 patents

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    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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    Oyster paper and manufacturing method thereof

    • Patent number 11,401,391
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    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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    Barrier products

    • Patent number 5,004,645
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    • DRG (UK) Limited
    • Alan Tallentire
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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    Organic pigments

    • Patent number 4,483,959
    • Issue date Nov 20, 1984
    • Hercules Incorporated
    • William W. Maslanka
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Organic pigments

    • Patent number 4,469,555
    • Issue date Sep 4, 1984
    • Hercules Incorporated
    • William W. Maslanka
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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    Organic pigments

    • Patent number 4,456,724
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    Organic pigments

    • Patent number 4,434,267
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    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Organic pigments

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  • Information Patent Grant

    3336153

    • Patent number 3,336,153
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