Patents and Certification

• Method and device for map display based on path direction 2015.07.16
• Air supply device for fuel cells and fuel cell system including the same 2013.08.20
• Wireless power receiver and its control method 2018.07.25
• Wireless power transmitter and its control method 2018.07.25
• High-temperature fuel cell system with improved heat utilization 2014.08.06
• Fuel cell system with a combustion structure for expanding flammability limits 2014.10.28
• Unmanned pesticide supply system 2017.11.01
• Modular drone 2018.08.09
• Control system for unmanned aircraft 2019.06.03
• High-speed encryption method of video data for LTE-based swarm unmanned aviation system 2020.03.04
• Emergency alert system using multiple drones 2020.01.03
• Modular drone connection structure 2020.05.21
• Ground control device for unmanned aircraft 2020.11.05
• Unmanned aircraft black box system (PCT) 2021.01.21
• Fuel cell power pack integrated with a hydrogen tank and drone equipped with it 2023.06.29
• Drone equipped with an energy harvesting device 2023.01.26
• Hydrogen power pack for drones with a temperature control system 2023.07.20
• Drone station for automatic landing and hydrogen refueling of hydrogen drones 2023.07.20
• Electric vehicle charging system using hydrogen fuel cells 2023.03.14
• Vehicle charging system capable of hydrogen and electric charging 2023.03.14
• Drone (Class 12) 2019.04.10
• HogreenAir (Class 12) 2018.10.16
• Keefly 2019.09.10