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Dimpled heat exchanger tube
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Patent number 11,346,616
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Issue date May 31, 2022
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DENSO International America, Inc.
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Siddharth Dasgupta
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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Heat exchanger
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Patent number 10,907,902
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Issue date Feb 2, 2021
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HITACHI-JOHNSON CONTROLS AIR CONDITIONING, INC.
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Mikihito Tokudi
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F28 - HEAT EXCHANGE IN GENERAL
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Return bend ringing system and method
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Patent number 10,414,006
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Issue date Sep 17, 2019
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Arrow Fabricated Tubing, Inc.
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Kenneth Ray Lamb
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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Refrigerant evaporator
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Patent number 10,352,601
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Issue date Jul 16, 2019
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DENSO CORPORATION
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Masakazu Morimoto
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F28 - HEAT EXCHANGE IN GENERAL
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Brazed aluminum heat exchanger
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Patent number 6,886,349
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Issue date May 3, 2005
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Lennox Manufacturing Inc.
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Victor Curicuta
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F28 - HEAT EXCHANGE IN GENERAL
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Method of making heat exchanger coil
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Patent number 4,186,474
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Issue date Feb 5, 1980
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Westinghouse Electric Corp.
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Louis P. Hine
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B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
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3908758
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Patent number 3,908,758
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Issue date Sep 30, 1975
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F28 - HEAT EXCHANGE IN GENERAL
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3849854
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Patent number 3,849,854
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Issue date Nov 26, 1974
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B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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3396785
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Patent number 3,396,785
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Issue date Aug 13, 1968
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F28 - HEAT EXCHANGE IN GENERAL
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3357812
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Patent number 3,357,812
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Issue date Dec 12, 1967
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C05 - FERTILISERS MANUFACTURE THEREOF
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3353850
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Patent number 3,353,850
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Issue date Nov 21, 1967
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F24 - HEATING RANGES VENTILATING
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2980402
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Patent number 2,980,402
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Issue date Apr 18, 1961
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F28 - HEAT EXCHANGE IN GENERAL
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1999246
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Patent number 1,999,246
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Issue date Apr 30, 1935
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F28 - HEAT EXCHANGE IN GENERAL