Yen Ching Chu

Title: Yen Ching Chu: Inventions in Mobility and Semiconductor Cleaning.

Introduction

Yen Ching Chu is an inventor associated with Cupertino, California. Chu’s work spans assistive mobility and semiconductor wafer cleaning, and the supplied information lists 3 patents.

Latest Patents

Chu’s “Slidable lifting seat apparatus and method to assist standing up” describes a device intended to help older adults and people with physical impairments rise from chairs, wheelchairs, toilets, walkers, and other seats. A slidable seat is pivotally mounted on a base, and a lifting spring stores energy as a person sits and releases it to provide assistance when standing.

“Salsa clean process” describes a wet-spray method for removing thick organic layers, including hardened photoresist, from silicon wafers. The process uses repeated SPM, DI, and APM cleaning cycles without an intervening drying step. It is designed to achieve low residual particle counts on wafers with photoresist layers up to three microns thick while maintaining low particle density on oxide-covered regions.

Career Highlights

The supplied career information associates Chu with Advanced Micro Devices Corporation. The listed inventions reflect applications in both assistive devices and semiconductor manufacturing.

Collaborations

Chu’s listed coworkers include Barry Dick and Max J. Soldenwagner.

Conclusion

Yen Ching Chu’s patent work addresses practical challenges in helping people stand and cleaning silicon wafers, illustrating the range of applications represented in the inventor’s portfolio.