John E Horne

Title: John E Horne: Innovator in Critical Point Drying Technology

Introduction

John E Horne is a notable inventor based in Hyattsville, MD (US), recognized for his contributions to the field of electron microscopy. He holds 2 patents that showcase his innovative approach to specimen preparation.

Latest Patents

Horne's latest patents include the "Semi-automatic critical point drying apparatus" and the "Automatic critical point drying apparatus." The semi-automatic apparatus is designed for the preparation of biological or organic specimens for examination by scanning electron microscopy. In this process, the specimen is placed in a chamber where a transitional fluid, such as liquid CO₂, replaces the dehydrating liquid. The apparatus heats the transitional fluid to elevate the temperature and pressure above its critical point. A five-way indicator valve enhances usability by allowing the operator to control various operations easily.

The automatic critical point drying apparatus automates the sample preparation process in electron microscopy. It proceeds through multiple operational modes, including precooling, starting, purging, heating, bleeding, and finishing. These steps can be activated in sequence or controlled manually, providing flexibility in specimen preparation.

Career Highlights

Throughout his career, John E Horne has worked with various organizations, including Tousimis Research Corporation. His work has significantly impacted the field of electron microscopy, particularly in improving the efficiency and effectiveness of specimen drying techniques.

Collaborations

Horne has collaborated with notable individuals such as Stephen A Van Albert and A J Tousimis, contributing to advancements in critical point drying technology.

Conclusion

John E Horne's innovative patents and career achievements highlight his significant contributions to the field of electron microscopy. His work continues to influence the preparation of biological specimens for scientific examination.