Dong Choon
Dong Choon Chung, Yeosu-Si KR
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20110118402 | Composite Solid Surface Article Containing Ocher - A composition for artificial marble includes (a) about 100 parts by weight of an acrylic resin; (b) about 1 to about 30 parts by weight of an ocher powder having a particle size of about 1 to about 50 μm; (c) about 100 to about 200 parts by weight of an inorganic filler; (d) about 0.1 to about 10 parts by weight of cross-linking agent; and (e) about 0.1 to about 10 parts by weight of a polymerization initiator. | 05-19-2011 |
Dong Choon Lee, Seoul KR
Patent application number | Description | Published |
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20080315703 | Stator Core for Alternator and Motor - Disclosed is a stator core for a generator and a motor comprising a frame formed in a shape of a straight plate; and a plurality of coil winding portions spacedly formed in one side of the frame and projected from the one side thereof. The stator core forms a stator by bending the frame in a round shape so as to position the coil winding portions in an inner side of the frame, laminating the frame, and winding coils around the coil winding portions. Wherein projections are spacedly formed in the portions corresponding to the coil winding portions in the other side of the frame, and the projections compensates height differences generated on an outer wheel of the frame due to a plastic deformation that portions corresponding to grooves between the coil winding portions in the other side of the frame are projected when bending the frame in a round shape, thereby to maintain evenly a surface of the outer wheel of the frame. | 12-25-2008 |
Dong Choon Lee, Daegu KR
Patent application number | Description | Published |
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20160049880 | HIGH-VOLTAGE DIRECT CURRENT CONVERTER - The present invention relates to a high-voltage direct current (HVDC) converter comprising: a 12-pulse diode rectifier having two three-phase bridge diode rectifiers connected in series to rectify, to 12 pulses, alternating current (AC) power inputted from a point of connection on the sea; and a voltage-source converter connected in series to a lower end of the 12-pulse diode rectifier, wherein the voltage-source converter controls a voltage of the AC power inputted from the point of connection on the sea and a DC link voltage of the voltage-source converter. | 02-18-2016 |