Inventor
Gyu Ho Lim
Inventor
Cheongju-si, KR
Overview
Patents· 13 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating26%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications26%
G05FSystems for regulating electric or magnetic variables9%
G09GArrangements or circuits for control of indicating devices using static means to present variable information9%
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 systems9%
H03KPulse technique9%
F21SNon-portable lighting devices3%
F21YIndexing scheme associated with subclasses f21k, f21l, f21s and f21v, relating to the form or the kind of the light sources or of the colour of the light emitted3%
G01RMeasuring electric variables3%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%
PatentTitleYear
10,243,558Complementary metal-oxide-semiconductor (CMOS) inverter circuit device201910,231,302Power factor correction control circuit and driving method thereof20199,961,742Multi-channel LED driver with overheating protection capabilities20189,887,621'Power factor correction circuit and method for correcting power factor, converter device thereof'20189,888,552'Detecting circuit for short of LED array and LED driving apparatus using the same'20189,875,697Parallel constant current LED driving units for driving a LED string and method of performing the same20189,788,372'Gate off delay compensation circuit and light apparatus having the same'20179,692,404'Power factor correction controlling circuit and driving method thereof'20179,642,197'Circuit for compensating bipolar junction transistor base current and LED driving apparatus having the same'20179,521,719'Circuit for driving lighting apparatus and method thereof'20169,490,692'Circuit and method of correcting a power factor for AC direct lighting apparatus'20169,253,834'LED driver circuit having a sensing unit'20168,497,726'Level shifter'2013Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2013–2019Patents assigned to MAGNACHIP SEMICONDUCTOR LTD (13)· patent assignee history
2013–2018Patents assigned to LIM GYU-HO (3)· patent assignee history
2013–2019Based in Cheongju-si, KR· patent location history
2016–2018Patents assigned to KANG TAE-KYOUNG (2)· patent assignee history
2016Patents assigned to KIM HYOUNG-KYU (1)· patent assignee history
2016Patents assigned to KIM JIN-WOOK (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAGNACHIP SEMICONDUCTOR LTD | 13 | 2013–2019 |
| LIM GYU-HOself | 3 | 2013–2018 |
| KANG TAE-KYOUNG | 2 | 2016–2018 |
| KIM HYOUNG-KYU | 1 | 2016 |
| KIM JIN-WOOK | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cheongju-si, KR | 13 | 2013–2019 |