TREA

Paper or cardboard prepared by adding substances to the pulp or to the formed web on the paper-making machine and by applying substances to finished paper or cardboard (on the paper-making machine), also when the intention is to impregnate at least a part of the paper body

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Industry

  • CPC
  • D21H3/00
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Parent Industries

DTEXTILES PAPER D21Papermaking D21HPULP COMPOSITIONS PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D IMPREGNATING OR COATING OF PAPER TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G PAPER NOT OTHERWISE PROVIDED FOR

Current Industry

D21H3/00Paper or cardboard prepared by adding substances to the pulp or to the formed web on the paper-making machine and by applying substances to finished paper or cardboard (on the paper-making machine), also when the intention is to impregnate at least a part of the paper body

Sub Industries

D21H3/82by adding insoluble coloured substances D21H3/825substances having a characteristic form
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Supercalendered kraft paper comprising recycled fiber
    • Patent number 12,188,183
    • Issue date Jan 7, 2025
    • UPM-Kymmene Corporation
    • Jukka Kotilainen
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Papers comprising aerogel powder and aramid polymer fibrils
    • Patent number 11,578,461
    • Issue date Feb 14, 2023
    • DuPont Safety & Construction, Inc.
    • Mehdi Afshari
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Dry strength composition, its use and method for making of paper, b...
    • Patent number 11,427,965
    • Issue date Aug 30, 2022
    • Kemira Oyj
    • Matti Hietaniemi
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Oyster paper and manufacturing method thereof
    • Patent number 11,401,391
    • Issue date Aug 2, 2022
    • Don Jia Poly Plastic Ltd.
    • Jui Lung Huang
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
  • Information Patent Grant

    Recycled or brown paper board and methods of making same
    • Patent number 11,203,837
    • Issue date Dec 21, 2021
    • BASF SE
    • Peter C. Hayes
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Web of cellulosic fibers comprising an active agent and method for...
    • Patent number 10,253,455
    • Issue date Apr 9, 2019
    • ESSITY OPERATIONS FRANCE
    • Gérald Duhen
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Method of increasing drainage performance of a pulp slurry during m...
    • Patent number 9,873,982
    • Issue date Jan 23, 2018
    • Solenis Technologies, L.P.
    • John C. Harrington
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Sheet manufacturing apparatus
    • Patent number 9,476,161
    • Issue date Oct 25, 2016
    • Seiko Epson Corporation
    • Naotaka Higuchi
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Barrier products
    • Patent number 5,004,645
    • Issue date Apr 2, 1991
    • DRG (UK) Limited
    • Alan Tallentire
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    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
  • Information Patent Grant

    Organic pigments
    • Patent number 4,456,724
    • Issue date Jun 26, 1984
    • Hercules Incorporated
    • William W. Maslanka
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Organic pigments
    • Patent number 4,434,267
    • Issue date Feb 28, 1984
    • Hercules Incorporated
    • William W. Maslanka
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Organic pigments
    • Patent number 4,426,483
    • Issue date Jan 17, 1984
    • Hercules Incorporated
    • William W. Maslanka
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    3507691
    • Patent number 3,507,691
    • Issue date Apr 21, 1970
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    3336153
    • Patent number 3,336,153
    • Issue date Aug 15, 1967
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents