Inventor
Chang-sik Lim
Inventor
Cheongju-si, KR
Overview
Patents· 18 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating18%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications18%
G09GArrangements or circuits for control of indicating devices using static means to present variable information13%
H03KPulse technique10%
F02MSupplying combustion engines in general with combustible mixtures or constituents thereof5%
B60LPropulsion of electrically-propelled vehicles3%
F01CRotary-piston or oscillating-piston machines or engines3%
F02DControlling combustion engines3%
F04BPositive-displacement machines for liquids3%
F04CRotary-piston, or oscillating-piston, positive-displacement machines for liquids3%
PatentTitleYear
9,596,723'PWM signal generating circuit for DC-DC converter using dimming signal and LED driving circuit having the same in direct digital dimming method'20179,532,432'LED driver apparatus'20169,173,260'PWM signal generating circuit for DC-DC converter using dimming signal and LED driver circuit using the same in digital PWM method having fixed phase mode'20159,024,381'Semiconductor device and fabricating method thereof'20158,941,327'PWM controlling circuit and LED driver circuit having the same'20158,860,320'LED driver apparatus'20148,686,652'Reference voltage generating circuit and LED driver circuit having the same therein'20148,651,829'Vacuum pump for vehicles'20148,643,289'PWM controlling circuit and LED driver circuit having the same'20148,581,511'Circuit and method for generating PWM signal for DC-DC converter using dimming signal and LED driving circuit for backlight having the same'20138,337,143'Actuator in turbocharger of vehicle and method for controlling the same'20128,281,771'Exhaust gas recirculation valve in vehicle'20127,971,578'Exhaust gas recirculation valve for vehicle'20116,172,573'Oscillator having compensation for a schmitt trigger response delay'20015,841,306'Pulse generator for generating output pulse of a predetermined width'19985,739,680'Constant voltage control device'19985,614,857'Hysteresis system with constant threshold voltage'19975,319,265'Comparator with hysteresis'1994Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1994–1998Patents assigned to SAMSUNG ELECTRONICS CO LTD (4)· patent assignee history
2001–2015Based in Bucheon-si, KR· patent location history
2011–2014Patents assigned to KAMTEC INC (4)· patent assignee history
2011–2012Based in Icheon-si, KR· patent location history
2012Based in Jincheon-gun, KR· patent location history
2013–2017Patents assigned to MAGNACHIP SEMICONDUCTOR LTD (9)· patent assignee history
2013–2017Patents assigned to LIM CHANG-SIK (8)· patent assignee history
2013–2017Based in Cheongju-si, KR· patent location history
2014–2017Patents assigned to RYU BEOM-SEON (5)· patent assignee history
2014Based in Chungbuk, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| MAGNACHIP SEMICONDUCTOR LTD | 9 | 2013–2017 |
| LIM CHANG-SIKself | 8 | 2013–2017 |
| RYU BEOM-SEON | 5 | 2014–2017 |
| KAMTEC INC | 4 | 2011–2014 |
| SAMSUNG ELECTRONICS CO LTD | 4 | 1994–1998 |
Locations
| Location | Patents | Span |
|---|---|---|
| Cheongju-si, KR | 8 | 2013–2017 |
| Bucheon-si, KR | 2 | 2001–2015 |
| Icheon-si, KR | 2 | 2011–2012 |
| Chungbuk, KR | 1 | 2014 |
| Jincheon-gun, KR | 1 | 2012 |