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| 보유기술 Technology |
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| 특허권 | Patent |
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Title of invention: “Closed circulatory hot & cold water supply system” |
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Patent No.: 10-0754490
Registration Date: August 27, 2007
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Title of invention: “Continuously running super market refrigerator” |
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Patent No.: 10-0560561
Registration Date: March 7, 2006
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Title of invention: “Control device and method for refrigerator” |
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Patent No.: 0459091
Registration Date: November 19, 2004
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Title of invention: “Temperature control method and device for super market refrigerator through a c |
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Patent No.: 0392304
Registration Date: July 9, 2003
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Title of invention: “Harmonic mitigation filter device” |
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Patent No.: 10-033747
Registration Date: May 8, 2002
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Title of invention: “High voltage power supply combined with capacitor & inductor(reactor)” |
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Patent No.: 10-0315444
Registration Date: November 9, 2001
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Title of invention: “Motor speed controller” |
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Patent No.: 10-0304790
Registration Date: July 24, 2001
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Title of invention: “Voltage sourced VFD’s switching circuit and control methods” |
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Patent No.: 10-0216868
Registration Date: June 2, 1999
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Title of invention: “PWM type current controller ” |
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Patent No.: 10-0174490
Registration Date: November 4, 1998
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Title of invention: “Soft charging device for smoothing circuit of AC power supply” |
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Patent No.: 10-0149968
Registration Date: June 10, 1998
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Title of invention: “Inverter snubber circuit using high frequency DC/DC converter” |
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Patent No.: 10-0132187
Registration Date: December 8, 1997
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Title of invention: “DC voltage measuring circuit through phototransistor combination” |
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Patent No.: 10-00111436
Registration Date: January 28, 1997
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