TREA

Rotary digesters

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  • CPC
  • D21C7/02
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Parent Industries

DTEXTILES PAPER D21Papermaking D21CPRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS REGENERATION OF PULPING LIQUORS APPARATUS THEREFOR D21C7/00Digesters

Current Industry

D21C7/02Rotary digesters
Industries

Patents Grantslast 30 patents

  • Information Patent Grant

    Biomass pulp digester
    • Patent number 11,162,218
    • Issue date Nov 2, 2021
    • Robert Clayton
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Biomass, thermal pressure hydrolysis and anaerobic digestion
    • Patent number 10,907,303
    • Issue date Feb 2, 2021
    • THERMO PRESSURE TECHNOLOGIES LIMITED
    • Ian Cecil Toll
    • C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
  • Information Patent Grant

    Continuous horizontal digester
    • Patent number 10,422,077
    • Issue date Sep 24, 2019
    • Hao Li
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Bin arrangement for the collecting and discharging of smaller ligno...
    • Patent number 9,816,229
    • Issue date Nov 14, 2017
    • Valmet AB
    • Patrik Bjornvall
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Short oxygen delignification method
    • Patent number 9,512,560
    • Issue date Dec 6, 2016
    • QUANTUM TECHNOLOGIES, INC.
    • Peter A. Piechuta
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    Rotating pulp bleaching reactor having inner and outer shells and l...
    • Patent number 5,087,326
    • Issue date Feb 11, 1992
    • Union Camp Patent Holding, Inc.
    • Stuart T. Jones
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2793117
    • Patent number 2,793,117
    • Issue date May 21, 1957
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2287332
    • Patent number 2,287,332
    • Issue date Jun 23, 1942
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2267671
    • Patent number 2,267,671
    • Issue date Dec 23, 1941
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    2018937
    • Patent number 2,018,937
    • Issue date Oct 29, 1935
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1991244
    • Patent number 1,991,244
    • Issue date Feb 12, 1935
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1913607
    • Patent number 1,913,607
    • Issue date Jun 13, 1933
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1857317
    • Patent number 1,857,317
    • Issue date May 10, 1932
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1566339
    • Patent number 1,566,339
    • Issue date Dec 22, 1925
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    1278155
    • Patent number 1,278,155
    • Issue date Sep 10, 1918
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    985613
    • Patent number 985,613
    • Issue date Feb 28, 1911
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    870562
    • Patent number 870,562
    • Issue date Nov 12, 1907
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    807925
    • Patent number 807,925
    • Issue date Dec 19, 1905
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    653186
    • Patent number 653,186
    • Issue date Jul 3, 1900
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    647062
    • Patent number 647,062
    • Issue date Apr 10, 1900
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    570641
    • Patent number 570,641
    • Issue date Nov 3, 1896
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    525540
    • Patent number 525,540
    • Issue date Sep 4, 1894
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    496275
    • Patent number 496,275
    • Issue date Apr 25, 1893
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    265649
    • Patent number 265,649
    • Issue date Oct 10, 1882
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    240318
    • Patent number 240,318
    • Issue date Apr 19, 1881
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    212447
    • Patent number 212,447
    • Issue date Feb 18, 1879
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    206277
    • Patent number 206,277
    • Issue date Jul 23, 1878
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    148125
    • Patent number 148,125
    • Issue date Mar 3, 1874
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    131749
    • Patent number 131,749
    • Issue date Oct 1, 1872
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
  • Information Patent Grant

    117427
    • Patent number 117,427
    • Issue date Jul 25, 1871
    • D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Patents Applicationslast 30 patents