by mixing two or more coaltar fractions

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Patents Grantslast 30 patents

  • Information Patent Grant

    Rotational mixing and induction heating system and method for recyc...

    • Patent number 10,889,940
    • Issue date Jan 12, 2021
    • Francesco Crupi
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    Process for producing mesophase pitch by hydrogenation of high-temp...

    • Patent number 9,994,775
    • Issue date Jun 12, 2018
    • ECO ENVIRONMENTAL ENERGY RESEARCH INSTITUTE LIMITED
    • Hongmei Zhao
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    3761387

    • Patent number 3,761,387
    • Issue date Sep 25, 1973
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    3304191

    • Patent number 3,304,191
    • Issue date Feb 14, 1967
    • A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
  • Information Patent Grant

    3261269

    • Patent number 3,261,269
    • Issue date Jul 19, 1966
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    3221615

    • Patent number 3,221,615
    • Issue date Dec 7, 1965
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3091543

    • Patent number 3,091,543
    • Issue date May 28, 1963
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
  • Information Patent Grant

    3070449

    • Patent number 3,070,449
    • Issue date Dec 25, 1962
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    3035932

    • Patent number 3,035,932
    • Issue date May 22, 1962
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    3010893

    • Patent number 3,010,893
    • Issue date Nov 28, 1961
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2967815

    • Patent number 2,967,815
    • Issue date Jan 10, 1961
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2861894

    • Patent number 2,861,894
    • Issue date Nov 25, 1958
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2774716

    • Patent number 2,774,716
    • Issue date Dec 18, 1956
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2603592

    • Patent number 2,603,592
    • Issue date Jul 15, 1952
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2478654

    • Patent number 2,478,654
    • Issue date Aug 9, 1949
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2395041

    • Patent number 2,395,041
    • Issue date Feb 19, 1946
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2297455

    • Patent number 2,297,455
    • Issue date Sep 29, 1942
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2273725

    • Patent number 2,273,725
    • Issue date Feb 17, 1942
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2149275

    • Patent number 2,149,275
    • Issue date Mar 7, 1939
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    2007378

    • Patent number 2,007,378
    • Issue date Jul 9, 1935
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    1933796

    • Patent number 1,933,796
    • Issue date Nov 7, 1933
    • C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
  • Information Patent Grant

    1917384

    • Patent number 1,917,384
    • Issue date Jul 11, 1933
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    1844899

    • Patent number 1,844,899
    • Issue date Feb 9, 1932
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
  • Information Patent Grant

    1826428

    • Patent number 1,826,428
    • Issue date Oct 6, 1931
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...