Hyunchul Eum — 12 Patents at onsemi

Hyunchul Eum has been granted 12 US patents while listed as an inventor at onsemi. The first was granted in 2017 and the most recent in November 2025. Hyunchul Eum ranks #396,045 of 4,157,543 US inventors in our database (top 9.5%). Patent records list Hyunchul Eum in Chandler, AZ, US.

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Showing 1–12 of 12 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
12476535	Method and system of reducing total harmonic distortion of power-factor correction converters	Minha HWANG, Dharam P. Chopra	2025-11-18
12267004	Methods and systems of power-factor-correction converters	Giyoung Chun	2025-04-01
10999905	Current control for power converter	Gyumin Park, Minha HWANG	2021-05-04	$76,384,000
10708994	System and method for shaping input current in light emitting diode (LED) system	—	2020-07-07	$8,550,000
10575377	Line ripple reducer	—	2020-02-25	$5,445,000
10412798	Control system for phase-cut dimming	Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Young M. Yang, Young-Je Lee +2 more	2019-09-10	$8,195,000
10405382	System and method for shaping input current in light emitting diode (LED) system	—	2019-09-03	$9,477,000
10178729	Lighting circuit with internal reference thresholds for hybrid dimming	Seunguk YANG, Moonsik SONG	2019-01-08	$8,074,000
10091849	Hybrid dimming for lighting circuits	Seunguk YANG, Eungwoo Lee	2018-10-02	$4,220,000
9900938	LED lighting circuit with ripple reducer	Jintae Kim, Inki Park, Eungwoo Lee	2018-02-20
9872349	Control system for phase-cut dimming	Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Young M. Yang, Young-Je Lee +2 more	2018-01-16
9826608	Standby current supplier	Youngjong Kim, Kuo-Hsien Huang, Chih-Chun Chuang, Moon Ho CHOI, Moon Sik Song	2017-11-21

Hyunchul Eum — 12 Patents

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