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2018 The Korean Intellectual Property Office
(A gas sensing apparatus and method using infrared sensor for preventing false alarms caused by interfering gases)
2018 The Korean Intellectual Property Office
(Gas Detecting Apparatus Having Explosion-proof Sensor Cartridge using Air Sampling)
2014 Certificate of Patent
(Gas Sensor with Hot Wire Type Semi-conductor)
2009 The Korean Intellectual Property Office
(Suction Type Infrared Gas Module)
2009 The Korean Intellectual Property Office
(Diffusion Type Gas Sensor Module)
2008 The Korean Intellectual Property Office
(Gas Detector that Fulfills Battery Charging Circuit)
2008 The Korean Intellectual Property Office
(Combustion-Type Gas Sensor for Highly Combustible Gas)
2007 The Korean Intellectual Property Office
(Gas Detector that Controls Constant Output Currency)
2007 The Korean Intellectual Property Office
(Infrared Ray Type Gas Detector)
2007 The Korean Intellectual Property Office
(Control System of Touch-Screen Gas Detector)
2002 The Korean Intellectual Property Office
(Gas Detector)
2001 The Korean Intellectual Property Office
(Suction Type Gas Detector)
2001 The Korean Intellectual Property Office
(Diffusion Type Gas Detector)