08.08Hollow Type Band-stop Filter (Patent 10-2001-0047697)
2002.
06.24Manufacturing method for Printed Circuit board to amplify high frequency (Patent 10-2002-0035323)
2004.
07.07Cooling Device using a fan for Relay housing (Utility Patent 20-2004-0019268)
09.23High frequency Power Amplifier using at least 3 Powers (Patent 10-2004-0076677)
11.09Noise Power Disconnecting Device for Mobile Communication System (Patent 10-2004-0090733)
2005.
10.31Easily Connecting SMA Connector (Utility Patent 20-2005-0030842)
2006.
01.23Manufacturing method for Chain Circuit board for high-frequency and High-heating element (Patent 10-2006-006756)
04.21Master Clock Eliminator of Digital Board for Signal Processing (Patent 10-2006-0036390)
09.19Messenger wire mounting type Housing for Electronic Equipment (Patent 10-2006-0090852)
2007.
01.18Power detector of Wibro System and the method (Patent 10-2007-005658)
Connector with Termination Auto Conversion Function (Patent 10-2007-5657)
06.28SMA Connector for High Power (Utility Patent 20-2007-00106595)
08.06High-power Broadcasting/Communication Relay with Cooling Device (Patent 10-2007-0078393)
09.06Housing to Store electronic equipment with Cooling Function (Patent 10-2007-0078393)
Cooling Fan Noise Reduction Device for electronic equipment and the Method (Patent 10-2007-0090481)
09.07Wiring Fixing Apparatus for Housing (Patent 10-2007-0090738)
09.13Communication relay unit that forms integral Function Block (Patent 10-2007-0093194)
09.27Auto Level and Auto Gain Controller for Communication and Broadcasting Equipment (Patent 2007-0097210)
10.04High-speed Data Communication Radio with Multi Carrier Allocation Function and the Method (Patent 10-2007-0099657)
Radio with Two-way Communication Function using Common Control Channel and Two-way Communication Method of the radio (Patent 10-2007-0099656)
10.10Gate Bias Device of portable internet transmission system Power Amplifier (Patent 10-2007-0101801)
11.13RF Signal Processing Device of Time Division Duplex Wireless Communication System (Patent 10-2007-0115300)
04.16Optical transceiver Module with self-diagnosis Function and the Method (Patent 10-2008-0034941)
06.20Monitoring System of backward Signal Transmission Path of Optical Relay and the Method (Patent 10-2008-0058557)
Auto Control System according to cause of oscillation of RF Relay and Control Method (Patent 10-20080058559)
Separation of the open air multi-stage natural convection heatsink
Insulated coaxial cable
2009.
01.22High efficiency Gate Bias voltage Switching Device for Broadband Amplifier (Patent 10-2009-0005295)