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Inventor

Chung Han Oh

Inventor
Seongnam-si, KR

Overview

15→
Patents
2005–2019
Patent span
Mechanical engineering
Primary field (CPC F)

Patents· 15 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

F01Lprimary
F01LCyclically operating valves for machines or engines62%
F01MLubricating of machines or engines in general10%
Y10TTechnical subjects covered by former us classification10%
B01DSeparation5%
F02BInternal-combustion piston engines5%
F02DControlling combustion engines5%
F16HGearing5%
PatentTitleYear
10,174,647Oil drain structure of valve timing adjusting device for internal combustion engine20199,957,850Method of controlling lock pin of continuously variable valve timing system20189,909,464'Intermediate phase adjustment apparatus of CVVT'20189,890,667'CVVT apparatus for engine'20189,874,117'Apparatus for opening and closing channel'20189,863,289'CVVT apparatus for engine'20189,828,891CVVT system20179,810,107'Intermediate phase adjustment apparatus of CVVT'20179,297,284'Engine having variable valve timing device'20169,151,365'Hydraulic timing chain tensioner and timing chain system'20158,899,196'Variable valve lift apparatus'20148,061,312'Continuous variable valve lift apparatus'20117,845,326'Variable valve lift apparatus'20107,237,518'Oil filter for continuous variable valve timing apparatus in engine'20076,863,042'Lubrication system for the timing chains of an automotive V-type engine'2005

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2005–2019Patents assigned to HYUNDAI MOTOR CO LTD (15)· patent assignee history
2005–2018Based in Gyeonggi-do, KR· patent location history
2007Based in Yongin-si, KR· patent location history
2010–2011Based in Yongin, KR· patent location history
2011Patents assigned to OH CHUNG HAN (1)· patent assignee history
2014–2019Based in Seongnam-si, KR· patent location history
2015–2019Patents assigned to KIA MOTORS CORP (10)· patent assignee history
2015Patents assigned to BORGWARNER INC (1)· patent assignee history
2019Patents assigned to DELPHI POWERTRAIN SYSTEMS KOREA LTD (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
HYUNDAI MOTOR CO LTD152005–2019
KIA MOTORS CORP102015–2019
BORGWARNER INC12015
DELPHI POWERTRAIN SYSTEMS KOREA LTD12019
OH CHUNG HANself12011
Locations
LocationPatentsSpan
Seongnam-si, KR102014–2019
Gyeonggi-do, KR22005–2018
Yongin, KR22010–2011
Yongin-si, KR12007