Inventor
Hyun-Chul Eum
Inventor
Seoul, KR
Overview
Patents· 25 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 systems26%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications26%
H05BElectric heating19%
H02HEmergency protective circuit arrangements10%
H03GControl of amplification10%
H03KPulse technique4%
Y02PClimate change mitigation technologies in the production or processing of goods3%
G01RMeasuring electric variables1%
G05FSystems for regulating electric or magnetic variables1%
PatentTitleYear
11,031,872Controlling output voltage for power converter202111,026,310LED driver circuit and LED driving method202111,025,169Overload protection for power converter202110,999,905Current control for power converter202110,880,966Multiple linear regulation202010,826,399System and method for controlling output signal of power converter202010,637,350Power factor correction circuit and driving method thereof202010,541,617Overload protection for power converter202010,530,259LED driving device202010,516,327System and method for controlling switching device in power converter201910,362,643LED driver circuit and LED driving method201910,326,370Controlling output voltage for power converter201910,291,130System and method for controlling output signal of power converter201910,241,143Sensing resistor short determiner, switch control circuit including the same and power supply including the switch control circuit201910,231,295Multiple linear regulation201910,004,121LED driving device20189,979,303Primary side regulation power supply device20189,935,538Power factor correction circuit and driving method thereof20189,800,136'Active damper and power supply including the same'20179,748,849'Power supply'20179,680,455'Clamping circuit, power supply device including the same and driving method of power supply device'20179,647,564'Power supply device'20179,502,983'Power supply device capable of varying switching frequency according to load condition'20169,467,137'Input current control method, switch control circuit and power supply including the switch control circuit'20169,362,843'Switch control device, power supply device comprising the same, and driving method of power supply device utilizing turn-on period half-on time point detection'2016Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2016–2020Patents assigned to FAIRCHILD KOREA SEMICONDUCTOR LTD (15)· patent assignee history
2016Patents assigned to FAIRCHILD KR SEMICONDUCTOR LTD (1)· patent assignee history
2016–2021Based in Seoul, KR· patent location history
2018–2021Patents assigned to SEMICONDUCTOR COMPONENTS IND LLC (18)· patent assignee history
2018–2021Based in Bucheon-si, KR· patent location history
2021Based in Gwangmyeong-si, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SEMICONDUCTOR COMPONENTS IND LLC | 18 | 2018–2021 |
| FAIRCHILD KOREA SEMICONDUCTOR LTD | 15 | 2016–2020 |
| FAIRCHILD KR SEMICONDUCTOR LTD | 1 | 2016 |
Locations
| Location | Patents | Span |
|---|---|---|
| Seoul, KR | 14 | 2016–2021 |
| Bucheon-si, KR | 10 | 2018–2021 |
| Gwangmyeong-si, KR | 1 | 2021 |