TREA

Introduction of compounds

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  • CPC
  • D21C11/0035
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DTEXTILES PAPER D21Papermaking D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR D21C11/00Regeneration of pulp liquors or effluent waste waters

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D21C11/0035Introduction of compounds
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Multi-step process for the isolation of components from Miscanthus
    • Patent number 11,814,790
    • Issue date Nov 14, 2023
    • EXEGI IP MANAGEMENT B.V.
    • Marcel Van De Peppel
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    Method of treating fly ash of a recovery boiler
    • Patent number 11,725,341
    • Issue date Aug 15, 2023
    • Andritz Oy
    • Keijo Salmenoja
    • C01 - INORGANIC CHEMISTRY
  • Information Patent Grant

    Method for utilizing lignin separated from black liquor as lime-kil...
    • Patent number 10,179,972
    • Issue date Jan 15, 2019
    • Andritz Oy
    • Paterson McKeough
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Method for recovering chemicals and by-products from high-sulphidit...
    • Patent number 10,011,949
    • Issue date Jul 3, 2018
    • Andritz Oy
    • Paterson McKeough
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Maintenance of sulfur concentration in Kraft pulp processes
    • Patent number 8,246,779
    • Issue date Aug 21, 2012
    • Noram Engineering and Constructors Ltd.
    • Jonathan Edward Foan
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Method for fixing a mineral filler on cellulosic fibers and method...
    • Patent number 6,706,148
    • Issue date Mar 16, 2004
    • Georgia-Pacific France
    • Didier Joisson
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Process for cooking and bleaching pulp
    • Patent number 4,799,994
    • Issue date Jan 24, 1989
    • Oy Tampella AB
    • Pertti Rimpi
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Method of covering the chemical losses in pulp production
    • Patent number 4,533,433
    • Issue date Aug 6, 1985
    • A. Ahlstrom Osakeyhtio
    • Karl B. Pettersson
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Kraft overload recovery process
    • Patent number 4,470,876
    • Issue date Sep 11, 1984
    • Marc F. Beaupr/e/
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Process for digesting and bleaching cellulosic material with reduce...
    • Patent number 4,329,199
    • Issue date May 11, 1982
    • SCA Development Aktiebolag
    • Per-Erik Andersson
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Method for making a soluble sulfite additive for use in a pulp maki...
    • Patent number 4,110,154
    • Issue date Aug 29, 1978
    • Rauma-Repola OY
    • Alpo Ora
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    3677885
    • Patent number 3,677,885
    • Issue date Jul 18, 1972
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    3366534
    • Patent number 3,366,534
    • Issue date Jan 30, 1968
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    3020195
    • Patent number 3,020,195
    • Issue date Feb 6, 1962
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2583145
    • Patent number 2,583,145
    • Issue date Jan 22, 1952
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2363150
    • Patent number 2,363,150
    • Issue date Nov 21, 1944
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2358187
    • Patent number 2,358,187
    • Issue date Sep 12, 1944
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2291833
    • Patent number 2,291,833
    • Issue date Aug 4, 1942
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2247584
    • Patent number 2,247,584
    • Issue date Jul 1, 1941
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2054727
    • Patent number 2,054,727
    • Issue date Sep 15, 1936
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1779537
    • Patent number 1,779,537
    • Issue date Oct 28, 1930
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1660696
    • Patent number 1,660,696
    • Issue date Feb 28, 1928
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1629393
    • Patent number 1,629,393
    • Issue date May 17, 1927
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1469960
    • Patent number 1,469,960
    • Issue date Oct 9, 1923
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents