on a rotary hearth

Patents Grantslast 30 patents

  • Information Patent Grant

    Calcined gypsum treatment device and calcined gypsum treatment method

    • Patent number 10,974,993
    • Issue date Apr 13, 2021
    • Yoshino Gypsum Co., Ltd.
    • Ken Hayase
    • B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • Information Patent Grant

    Raw material heating apparatus

    • Patent number 6,178,192
    • Issue date Jan 23, 2001
    • Chisaki Co., Ltd.
    • Tatsu Chisaki
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Sealing device for sinter cooler

    • Patent number 4,238,120
    • Issue date Dec 9, 1980
    • Dravo Corporation
    • Gunter Schneider
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Round cooler for hot bulk material

    • Patent number 4,126,411
    • Issue date Nov 21, 1978
    • Dravo Corporation
    • Klaus Moller
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    Ring shaped cooling device

    • Patent number 4,077,136
    • Issue date Mar 7, 1978
    • Krupp-Koppers GmbH
    • Johannes Lorrek
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    Method and apparatus for cooling of hot bulk materials

    • Patent number 3,942,263
    • Issue date Mar 9, 1976
    • Dravo Corporation
    • Hermann Muller
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3739495

    • Patent number 3,739,495
    • Issue date Jun 19, 1973
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    3707280

    • Patent number 3,707,280
    • Issue date Dec 26, 1972
    • C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
  • Information Patent Grant

    3309787

    • Patent number 3,309,787
    • Issue date Mar 21, 1967
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3243893

    • Patent number 3,243,893
    • Issue date Apr 5, 1966
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    3232714

    • Patent number 3,232,714
    • Issue date Feb 1, 1966
    • C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
  • Information Patent Grant

    2892265

    • Patent number 2,892,265
    • Issue date Jun 30, 1959
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2822078

    • Patent number 2,822,078
    • Issue date Feb 4, 1958
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2792924

    • Patent number 2,792,924
    • Issue date May 21, 1957
    • B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
  • Information Patent Grant

    2669032

    • Patent number 2,669,032
    • Issue date Feb 16, 1954
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2480727

    • Patent number 2,480,727
    • Issue date Aug 30, 1949
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2480726

    • Patent number 2,480,726
    • Issue date Aug 30, 1949
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2239246

    • Patent number 2,239,246
    • Issue date Apr 22, 1941
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    2225283

    • Patent number 2,225,283
    • Issue date Dec 17, 1940
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    1989662

    • Patent number 1,989,662
    • Issue date Feb 5, 1935
    • F27 - FURNACES KILNS OVENS RETORTS
  • Information Patent Grant

    1172576

    • Patent number 1,172,576
    • Issue date Feb 22, 1916
    • F26 - DRYING
  • Information Patent Grant

    608385

    • Patent number 608,385
    • Issue date Aug 2, 1898
    • F26 - DRYING
  • Information Patent Grant

    483923

    • Patent number 483,923
    • Issue date Oct 4, 1892
    • F26 - DRYING
  • Information Patent Grant

    359284

    • Patent number 359,284
    • Issue date Mar 15, 1887
    • F26 - DRYING
  • Information Patent Grant

    103744

    • Patent number 103,744
    • Issue date May 31, 1870
    • F26 - DRYING
  • Information Patent Grant

    31827

    • Patent number 31,827
    • Issue date Mar 26, 1861
    • F26 - DRYING