This inventor holds 1 USPTO granted patent. Top assignee: Richtek Technology Corporation. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Yuan-Hsun Chang and Multiphase Motor Control
Introduction
Yuan-Hsun Chang is an inventor based in Taipei, Taiwan, whose patent work includes motor-driving technology. He is associated with Richtek Technology Corporation.
Latest Patents
Chang is named on 1 patent: “Multiphase Motor Driving Circuit and Multiphase Motor Driving Method.” The invention describes a circuit and control method for managing a multiphase motor during braking. When the control circuit’s holding voltage falls below a threshold, pulse-width modulation (PWM) switches help convert the motor’s back electromotive force (EMF) into power for the control circuit. When the holding voltage rises above another threshold, switches are kept continuously conductive to consume the back EMF and reduce the motor’s speed.
Career Highlights
Chang’s patent reflects work on motor-control circuitry that addresses both power supply to the control circuit and motor deceleration during braking. His association with Richtek Technology Corporation connects his inventive work to the company’s technology development.
Collaborations
Chang’s listed coworkers include I-Chi Lin and Hao-Che Ma. Their names indicate professional connections, though the available information does not specify their roles in the patent.
Conclusion
Yuan-Hsun Chang’s patent focuses on a multiphase motor braking approach that adapts switch operation to the control circuit’s holding voltage, supporting both circuit power and motor-speed reduction.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile