Inventor

Cheol-Jin Park

Inventor

Suwon-si, KR

Overview

14→

Patents

2001–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 14 as inventor

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

H02Mprimary

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems10%

H05KPrinted circuits10%

G02BOptical elements, systems or apparatus7%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein7%

H01FMagnets7%

H04NPictorial communication, e.g. television7%

H05BElectric heating7%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them5%

H02HEmergency protective circuit arrangements5%

H04JMultiplex communication5%

PatentTitleYear

10,942,364Apparatus for driving optical system with memory unit2021 10,921,552Autofocus apparatus and camera module including the same2021 7,808,190'Display apparatus and power supplying apparatus for lamp unit thereof'2010 7,746,206'Inverter transformer and inverter power module having the same for use in electric/electronic device'2010 7,710,046'Balance coil and inverter for driving backlight'2010 7,450,652'Apparatus and method for receiving signals in an OFDM communication system'2008 7,419,381'Hybrid circuit board and display device having the same'2008 7,307,974'System and method for channel estimation in an OFDM mobile communication system'2007 7,286,330'Power supply device and method having a spark prevention function'2007 7,273,379'Hybrid circuit board and display device having the same'2007 7,154,365'Apparatus for fixing bobbin to printed circuit board for use in transformer'2006 6,813,172'Power supply circuit for video display device'2004 6,535,474'Near field optical recording/reproducing device'2003 6,320,766'Power-saving circuit for an AC/DC adaptor for a portable computer'2001

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2001–2010Patents assigned to SAMSUNG ELECTRONICS CO LTD (10)· patent assignee history

2001–2010Based in Suwon-si, KR· patent location history

2003Patents assigned to LG ELECTRONICS INC (1)· patent assignee history

2007–2008Patents assigned to POSTECH FOUNDATION (2)· patent assignee history

2007Patents assigned to SAMAUNG ELECTRONICS CO LTD (1)· patent assignee history

2007–2008Based in Pohang-si, KR· patent location history

2010Based in Hwaseong-si, KR· patent location history

2010Based in Hwanseong-si, KR· patent location history

2021Patents assigned to JAHWA ELECTRONICS CO LTD (2)· patent assignee history

2021Based in Chungcheongnam-do, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SAMSUNG ELECTRONICS CO LTD	10	2001–2010
JAHWA ELECTRONICS CO LTD	2	2021
POSTECH FOUNDATION	2	2007–2008
LG ELECTRONICS INC	1	2003
SAMAUNG ELECTRONICS CO LTD	1	2007

Locations

Location	Patents	Span
Suwon-si, KR	7	2001–2010
Chungcheongnam-do, KR	2	2021
Pohang-si, KR	2	2007–2008
Hwaseong-si, KR	1	2010
Hwanseong-si, KR	1	2010