Inventor
KWAK YOUNG HONG
KR38 patents
⚠️ This page may combine multiple inventors who share the name “KWAK YOUNG HONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HYUNDAI MOTOR CO LTD
25 patentsUS7987826B2Aug 2, 2011
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD44 citations93
US9587531B2Mar 7, 2017
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD2 citations72
US10273837B1Apr 30, 2019
System for controlling variable valve apparatus and oil control valve for the same
HYUNDAI MOTOR CO LTD1 citations62
US9399932B2Jul 26, 2016
Variable valve device that varies lift amount of valve
HYUNDAI MOTOR CO LTD2 citations62
US9140147B2Sep 22, 2015
Multiple variable valve lift apparatus
HYUNDAI MOTOR CO LTD3 citations62
US7966980B2Jun 28, 2011
Variable compression ratio apparatus
HYUNDAI MOTOR CO LTD5 citations62
US9074499B2Jul 7, 2015
Multiple variable valve lift apparatus and engine provided with the same
HYUNDAI MOTOR CO LTD2 citations61
US7823552B2Nov 2, 2010
Continuous variable valve lift apparatus
HYUNDAI MOTOR CO LTD6 citations61
US7789053B2Sep 7, 2010
Continuous variable valve lift apparatus
HYUNDAI MOTOR CO LTD2 citations60
US8910601B2Dec 16, 2014
Cylinder air volume difference adjuster and continuous variable valve lifter including the same
HYUNDAI MOTOR CO LTD0 citations52
US8899195B2Dec 2, 2014
Electro-hydraulic variable valve lift apparatus
HYUNDAI MOTOR CO LTD1 citations52
US7827952B2Nov 9, 2010
Variable tappet
HYUNDAI MOTOR CO LTD0 citations52
US10344630B2Jul 9, 2019
Variable valve control system having common valve and engine system having the same
HYUNDAI MOTOR CO LTD0 citations51
US7950360B2May 31, 2011
Continuous variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations51
US7836863B2Nov 23, 2010
Variable valve lift apparatus of engine for vehicles
HYUNDAI MOTOR CO LTD1 citations51
US7918202B2Apr 5, 2011
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations50
US9267402B2Feb 23, 2016
Multistage variable valve lift apparatus, system and engine
HYUNDAI MOTOR CO LTD0 citations48
US9874121B2Jan 23, 2018
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations41
US9816409B2Nov 14, 2017
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations41
US9689282B2Jun 27, 2017
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations41
US9670848B2Jun 6, 2017
Variable compression ratio engine
HYUNDAI MOTOR CO LTD0 citations41
US9556763B2Jan 31, 2017
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations41
US9447739B2Sep 20, 2016
Variable compression ratio engine
HYUNDAI MOTOR CO LTD0 citations41
US7905207B2Mar 15, 2011
Variable valve lift apparatus
HYUNDAI MOTOR CO LTD0 citations41
US10794308B2Oct 6, 2020
Apparatus and method for controlling deactivation of cylinders in engine
HYUNDAI MOTOR CO LTD0 citations37
YANG JEI CHOON
7 patentsUS8291875B2Oct 23, 2012
Continuously variable valve lift device for vehicle
YANG JEI CHOON3 citations62
US8607751B2Dec 17, 2013
Electro-hydraulic variable valve lift system
YANG JEI CHOON1 citations51
US8312852B2Nov 20, 2012
Variable tappet
YANG JEI CHOON1 citations51
US8291874B2Oct 23, 2012
Apparatus for adjusting deviation of engine and continuously variable valve lift device including the same
YANG JEI CHOON0 citations51
US8245676B2Aug 21, 2012
Continuously variable valve lift device of engine
YANG JEI CHOON1 citations51
US8146548B2Apr 3, 2012
Continuously variable valve lift device and operation logic thereof
YANG JEI CHOON0 citations51
US8573168B2Nov 5, 2013
Hydraulic pressure valve apparatus
YANG JEI CHOON0 citations50