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  • Y10S165/438
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YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS Y10USPC classification Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS Y10S165/00Heat exchange

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Y10S165/438Helical
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Patents Grantslast 30 patents

  • Information Patent Grant

    Heat transfer equipment
    • Patent number 4,998,583
    • Issue date Mar 12, 1991
    • Linde Aktiengesellschaft
    • Ulrich Lahne
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Method and apparatus for recovering heat from flue gases and for cl...
    • Patent number 4,909,318
    • Issue date Mar 20, 1990
    • Alfa-Laval Thermal AB
    • Gunnar Ymse
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Gas liquid parallel flow direct current heat exchanger
    • Patent number 4,538,676
    • Issue date Sep 3, 1985
    • L. & C. Steinmuller GmbH
    • Ulrich Premel
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Heat exchanger, particularly for heat pumps
    • Patent number 4,371,036
    • Issue date Feb 1, 1983
    • Marc Fordsmand
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    Heat reclaiming system
    • Patent number 4,346,759
    • Issue date Aug 31, 1982
    • Aerco International, Inc.
    • Kenneth W. Cohen
    • D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
  • Information Patent Grant

    Multi-pass heat exchanger having finned conduits of polygonal confi...
    • Patent number 3,991,823
    • Issue date Nov 16, 1976
    • Curtiss-Wright Corporation
    • William R. Litke
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3882933
    • Patent number 3,882,933
    • Issue date May 13, 1975
    • F22 - STEAM GENERATION
  • Information Patent Grant

    3799256
    • Patent number 3,799,256
    • Issue date Mar 26, 1974
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3746084
    • Patent number 3,746,084
    • Issue date Jul 17, 1973
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3712371
    • Patent number 3,712,371
    • Issue date Jan 23, 1973
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3533467
    • Patent number 3,533,467
    • Issue date Oct 13, 1970
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
  • Information Patent Grant

    3416599
    • Patent number 3,416,599
    • Issue date Dec 17, 1968
    • F22 - STEAM GENERATION
  • Information Patent Grant

    3138201
    • Patent number 3,138,201
    • Issue date Jun 23, 1964
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    3116790
    • Patent number 3,116,790
    • Issue date Jan 7, 1964
    • F22 - STEAM GENERATION
  • Information Patent Grant

    2523990
    • Patent number 2,523,990
    • Issue date Sep 26, 1950
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1926342
    • Patent number 1,926,342
    • Issue date Sep 12, 1933
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    1819785
    • Patent number 1,819,785
    • Issue date Aug 18, 1931
    • C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
  • Information Patent Grant

    1422521
    • Patent number 1,422,521
    • Issue date Jul 11, 1922
    • F24 - HEATING RANGES VENTILATING
  • Information Patent Grant

    1343669
    • Patent number 1,343,669
    • Issue date Jun 15, 1920
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1304379
    • Patent number 1,304,379
    • Issue date May 20, 1919
    • F17 - STORING OF DISTRIBUTING GASES OR LIQUIDS
  • Information Patent Grant

    1278311
    • Patent number 1,278,311
    • Issue date Sep 10, 1918
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    1064775
    • Patent number 1,064,775
    • Issue date Jun 17, 1913
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    972626
    • Patent number 972,626
    • Issue date Oct 11, 1910
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    909632
    • Patent number 909,632
    • Issue date Jan 12, 1909
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    843791
    • Patent number 843,791
    • Issue date Feb 12, 1907
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    757665
    • Patent number 757,665
    • Issue date Apr 19, 1904
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    540808
    • Patent number 540,808
    • Issue date Jun 11, 1895
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    351182
    • Patent number 351,182
    • Issue date Oct 19, 1886
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    205153
    • Patent number 205,153
    • Issue date Jun 18, 1878
    • F28 - HEAT EXCHANGE IN GENERAL
  • Information Patent Grant

    64325
    • Patent number 64,325
    • Issue date Apr 30, 1867
    • F28 - HEAT EXCHANGE IN GENERAL

Patents Applicationslast 30 patents