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DH HOLDINGS CO LTD

Overview
  • Total Patents
    47
  • GoodIP Patent Rank
    198,816
About

DH HOLDINGS CO LTD has a total of 47 patent applications. Its first patent ever was published in 2009. It filed its patents most often in Republic of Korea, China and Japan. Its main competitors in its focus markets surface technology and coating, environmental technology and transport are HONDA KAZUYOSHI, J&L TECH CO LTD and BOPP ANTON.

Patent filings in countries

World map showing DH HOLDINGS CO LTDs patent filings in countries
# Country Total Patents
#1 Republic of Korea 36
#2 China 5
#3 Japan 3
#4 United States 2
#5 Germany 1

Patent filings per year

Chart showing DH HOLDINGS CO LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kim Jae Deuk 19
#2 Jung Seung Il 16
#3 Noh Jong Sang 10
#4 Kim Ju Hyung 8
#5 Son Eul Ho 5
#6 Park Jun Hong 5
#7 Heo Seung Jin 4
#8 Kim Il Hwan 4
#9 Hwang In Sik 4
#10 Park Jung Hyun 4

Latest patents

Publication Filing date Title
CN106870808A Fastened by screw formula valve hand-hydraulic long-distance operating device
KR20170062892A Purification method of carbon nanotubes for fuel cell
KR20160022281A Aluminum Composite Casting Material comprising Nano Carbon hybrid coated with Metal and Oxide, and the manufacturing method for the same
KR20160046581A Stator Coolant Cooling Channel type Electric Motor
KR101591454B1 Manufacturing method for Metal and Oxide hybrid coated Nano Carbon
KR20150072227A Wireless Brushless DC motor Unit
KR20150081459A Method and apparatus for controlling the failure of hall sensor using sun-roof installed brushless direct current electric motor
KR20150065989A Apparatus for controlling the driving of sun roof using internal network of vehicle
KR20150028862A High Gear Ratio type Back Pressure Control Valve
KR20140142795A Nickel Coated Nano Carbon-Aluminum Composite Casting Material and the manufacturing method for the same
KR20140126597A Fuel battery membrane electrode assembly comprising micro graphite and method thereof
KR20140115133A System for coating nano-carbon with oxide
KR20140115134A Hybrid coating system for nano-carbon
KR20140115132A System for coating nano-carbon with metal
KR101364072B1 Separating plate for fuel cell and the method of manufacturing the same
JP2012248196A Active eco-pedal device
KR20130116624A Back pressure control valve based on pulse driven and operation method thereof
KR20130116626A Back pressure control valve and active heater operation method thereof
KR20130104797A Method of manufacturing ni-coated nano- carbons
KR20130081856A A boat tray take out device and a device for manufacturing carbon nano tube with the boat tray take out device