Chih-I Yang

Title: Chih-I Yang: Innovator in Magnetic Recording Technology

Introduction

Chih-I Yang is a notable inventor based in San Jose, CA, recognized for his contributions to the field of magnetic recording technology. He has developed innovative methods that enhance the fabrication processes of magnetic recording heads, particularly in reducing corrosion during production.

Latest Patents

Chih-I Yang holds a patent titled "Method of reducing main pole corrosion during aluminum oxide etch." This patent discloses a method for removing an alumina layer around a main pole layer during the fabrication of perpendicular magnetic recording heads. The process involves immersing a substrate in a series of aqueous solutions purged with an inert gas to eliminate oxygen, thereby preventing corrosion of the main pole. The method includes soaking the substrate in deionized water, followed by immersion in an etching bath at approximately 80°C with a pH of 10.5. The bath chemistry is primarily based on sodium carbonate and sodium bicarbonate, with nitrogen purging to improve etch uniformity and minimize residue. After etching, the substrate is rinsed in a second deionized water bath and subjected to a quick dump rinse before drying.

Career Highlights

Chih-I Yang is currently employed at Headway Technologies, Incorporated, where he continues to innovate in the field of magnetic recording technology. His work has significantly impacted the efficiency and effectiveness of manufacturing processes in this industry.

Collaborations

Chih-I Yang has collaborated with notable colleagues, including William Stokes and Chien-Li Lin, contributing to advancements in their shared field of expertise.

Conclusion

Chih-I Yang's innovative methods in magnetic recording technology demonstrate his commitment to enhancing production processes and reducing material corrosion. His contributions are vital to the ongoing development of efficient manufacturing techniques in the industry.