R&D

Patent

IP Rights Status

실용신안

Utility model 20-0819053
[ heat treatment equipment for fish hook material steel ]

Utility model 20-0328274
[ cleansing nozzle of wire for drawing process ]

Patent 10-1131141
[ wire winding device ]

Patent 10-1217592
[ Optic Panel ]

Patent 10-1436039
[ Rotating Flexible Exhaust Valve for Automotive Muffler ]

6) 10-1418493

7) 10-1418493

8) 10-1570872

1760504

1542569

Patent 10-1463238
[ Flexible Exhaust Valve for Automotive Muffler ]

Patent 10-1418493
[Metallic gland wire winding device ]

Patent 10-1570872
[ heat-resisting spring using high-temperature heat-resistant steel wires ]

Patent 10-1549225
[ Manufacturing method of Super alloy wire with high strength and anti-corrosion ]

Patent 10-1549225
[ Manufacturing method of high heat-resistance Steel Wire and hest-resistance Spring ]

1760504

12) 30-0801803

13) 30-0801804

14) 30-0801805

15) 30-0801805-01

Patent 10-1549225
[ Gate & spring assembled Exhaust valve ]

Design 30-0801803
[ Exhaust Valve for Automotive Muffler ]

Design 30-0801804
[ Exhaust Valve for Automotive Muffler ]

Design 30-0801805
[ Rotating Exhaust Valve for Automotive Muffler ]

Design 30-0801805-01
[ Rotating Exhaust Valve for Automotive Muffler ]