About 2 Trademarks found that are owned by Chen Kao Sung

Back pressure valves as parts of machines; Compressed air machine components, namely, cylinders, valves and air grips; Drives for motors; Driving motors, other than for land vehicles; Hydraulic valves being parts of machines; Parts of oilfield wellhead machines, namely, gate valves, ball valves, check valves, plug valves, globe valves, choke and manifold industrial pumps, pump and valve parts, pipe fittings and flanges; Proportional flow valves as parts of machines; Pump control valves; Pump diaphragms; Servo-drives for motors; Thermostatic control valves for machines; Valves as machine components; Valves being parts of machines

Manually operated metal valves; Metal elbows for pipes; Metal valves not being parts of machines; Valves of metal other than parts of machines including those from alloy steel and titanium; Water-pipe valves of metal

The mark consists of styled English letters "RiGEL".