Dan Lester Cossentine

Title: **Innovative Contributions of Dan Lester Cossentine in Semiconductor Processing**

Introduction

Dan Lester Cossentine, an accomplished inventor based in Santa Cruz, California, has made significant strides in the field of semiconductor technology. With a total of three patents to his name, Cossentine's work primarily focuses on methods and systems that enhance the efficiency and quality of semiconductor wafer processing.

Latest Patents

Cossentine's latest patents exemplify his innovative approach to surface preparation and wafer processing systems. One notable patent is for a "Method and apparatus for surface preparation prior to epitaxial deposition." This invention utilizes hydrogen plasma during the pre-treatment process to remove contaminants from wafer surfaces, ensuring that the wafers are optimally prepared for further processing. The design incorporates an elongated injector nozzle that directs hydrogen plasma with significant radial velocity, effectively transporting volatile compounds and contaminants away from the wafer surface. Furthermore, a protective liner made from crystalline silicon or polysilicon enhances the integrity of the plasma chamber by preventing contaminants from re-entering during the process.

Another significant patent is the "Semiconductor wafer processing system with vertically-stacked process chambers and single-axis dual-wafer transfer system." This invention features a multi-chamber module with stacked semiconductor wafer process chambers, each equipped with a dedicated loadlock chamber. The system includes a dual-wafer single-axis transfer arm designed to handle both processed and unprocessed wafers simultaneously. This innovation optimizes the efficiency of the wafer processing technique, contributing to the advancement of semiconductor manufacturing.

Career Highlights

Cossentine has held pivotal roles in several notable companies throughout his career, including Aviza Technology Limited and ASML US, Inc. His expertise in semiconductor processing and innovations has allowed him to contribute significantly to the companies he has been associated with, driving forward technological advancements in the industry.

Collaborations

Throughout his career, Cossentine has worked alongside distinguished colleagues such as Richard Savage and Frank S. Menagh. Their collaboration has likely facilitated the exchange of ideas and cultivation of innovative solutions within the realm of semiconductor technology.

Conclusion

Dan Lester Cossentine stands out as a prominent inventor in semiconductor technology, with contributions that have the potential to revolutionize the industry. His inventive spirit and commitment to developing advanced processing techniques underscore his importance in the field. As semiconductor technology continues to evolve, Cossentine's patents will likely remain influential in shaping the future of manufacturing efficiency and product quality.