Graham J Higham

Title: Innovations by Graham J Higham

Introduction

Graham J Higham is an accomplished inventor based in Danville, CA (US). He has made significant contributions to the field of vacuum technology, holding a total of 2 patents. His work focuses on developing advanced cryogenic vacuum pump systems that enhance efficiency and reduce contamination.

Latest Patents

Higham's latest patents include a "Hybrid Cryogenic Vacuum Pump Apparatus and Method of Operation" and a "Cryopump Method and Apparatus." The hybrid vacuum pump apparatus is designed to pump an enclosed chamber without the use of activated charcoal, effectively removing hydrogen through cryosorption. This innovation eliminates the potential for contamination by sorbent materials. The apparatus features an integral two-stage vacuum pump, where the first stage is a cryogenic pump that utilizes cryoarrays for the cryocondensation of gases. The second stage operates at room temperature and employs getter pumps to remove residual hydrogen. Additionally, Higham's cryopump method introduces a thermal switch that isolates cryoarrays from the refrigeration source, ensuring optimal operating temperatures during various processes.

Career Highlights

Graham J Higham is currently employed at Ebara Technologies Incorporated, where he continues to innovate in the field of vacuum technology. His expertise and inventions have positioned him as a key figure in advancing cryogenic systems.

Collaborations

Higham collaborates with Craig Perkins, contributing to the development of cutting-edge technologies in their field.

Conclusion

Graham J Higham's contributions to vacuum technology through his innovative patents demonstrate his commitment to enhancing efficiency and reducing contamination in cryogenic systems. His work continues to influence advancements in this critical area of technology.