Inventor

HE YINGYAN

CN4 patents

⚠️ This page may combine multiple inventors who share the name “HE YINGYAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

JOULWATT TECH CO LTD

2 patents

US12294301B2May 6, 2025

Power supply circuit and light-emitting diode (LED) driving system using power supply circuit

JOULWATT TECH CO LTD1 citations59

US12119749B2Oct 15, 2024

Flyback converter, constant-current control method, and lighting system

JOULWATT TECH CO LTD0 citations58

JOULWATT TECH HANGZHOU CO LTD

2 patents

US10327296B2Jun 18, 2019

Dimming circuit, dimming method and LED driving circuit

JOULWATT TECH HANGZHOU CO LTD0 citations40

US10645780B2May 5, 2020

Control circuit and control method for lighting circuit, and lighting circuit

JOULWATT TECH HANGZHOU CO LTD0 citations35