Sunpower: Korean Patents

The world leader in free-piston Stirling engines and coolers
and in linear compressors

Korean Patents

Patent Number	Title	Issue Date

863,087	Method and System for Centering a Workpiece on the Central Axis of a Cylindrical Bore	6-Oct-08
859,387	Energy Efficient, Inexpensive Extraction of Oxygen from Ambient Air for Portable and Home Use	12-Sept-08
854,177	Improved Temperature Controlled Free Piston Cryocooler	19-Aug-08
742,431	Involute Foil Regenerator	18-July-07
687,969	Parallel Slot Heat Exchanger	21-Feb-07
662,147	Controller for Reducing Excessive Amplitude of Oscillation of Free Piston	20-Dec-06
646,895	Piston and Cylinder for a Free Piston Machine and Method of Making the Piston	09-Nov-06
548,669	Refrigeration Circuit Having Series Evaporators And Modulatable Compressor	25-Jan-06
503,821	DC Centering of Free Piston Machine	18-Jul-05
485,402	Heat Exchanger and Method of Constructing Same	18-Apr-05
457,460	Centering System for Free Piston Machine	24-Dec-04
320,093	Fluid Bearing With Compliant Linkage for Centering Reciprocating Bodies	26-Dec-01
309,486	Magnet Support Sleeve for Lnear Electromechanical Transducer	07-Sep-01
301,548	Free Piston End Position Limiter	26-Jul-01
292,453	Triac Control Circuit	23-Mar-01
202,290	Apparatus for Measuring Piston Position in a Free Piston Compressor	19-May-99

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