George Thomas

Title: Innovations of George Thomas

Introduction

George Thomas is a notable inventor based in Fremont, CA (US), recognized for his contributions to the field of plasma processing technology. With a total of 11 patents to his name, he has made significant advancements that enhance the efficiency and effectiveness of various systems.

Latest Patents

Among his latest patents is a "Combiner and distributor for adjusting impedances or power across multiple plasma processing stations." This invention describes systems and methods for adjusting impedances or power across multiple plasma processing stations. One of the systems includes a first radio frequency (RF) generator that generates a first RF signal with a specific frequency, alongside a second RF generator that produces a second RF signal. The first impedance matching network modifies the first RF signal, while the second matching network does the same for the second RF signal. The system also features a combiner and distributor that connects to the outputs of both matching networks.

Another significant patent is focused on "Control of wafer bow in multiple stations." This system is designed to control wafer bow in plasma processing stations. It includes circuits that provide both low frequency and high frequency RF signals. The output circuit combines these signals to generate multiple combined RF signals for the stations. The amount of low frequency power delivered to a station is influenced by the wafer bow, which refers to the non-flatness of a wafer. A bowed wafer results in decreased low frequency power delivered to the station, and a shunt inductor is used to increase the current to the station with a bowed wafer, thereby minimizing the sensitivity of station power to wafer bowing.

Career Highlights

George Thomas has worked with prominent companies in the industry, including Lam Research Corporation and Novellus Systems Incorporated. His experience in these organizations has contributed to his expertise and innovative capabilities in plasma processing technologies.

Collaborations

Throughout his career, George has collaborated with various professionals, including Edward J Augustyniak and Sunil Kapoor. These collaborations have likely enriched his work and led to further advancements in his field.

Conclusion

George Thomas is a distinguished inventor whose work in plasma processing technology has led to significant innovations. His patents reflect a deep understanding of the complexities involved in this field, and his contributions continue to influence the industry.