Henry J Stevens

Title: The Innovations of Henry J. Stevens

Introduction

Henry J. Stevens is a notable inventor based in Athens, PA, who has made significant contributions to the field of materials science. With a total of five patents to his name, Stevens has focused on innovative methods for producing advanced materials, particularly in the area of tungsten.

Latest Patents

Among his latest patents is a method of making nanocrystalline tungsten powder. This method involves heating a tungsten-containing material in a reducing atmosphere at an intermediate temperature of about 600°C to 700°C for a specified time. The tungsten-containing material can be selected from ammonium paratungstate, ammonium metatungstate, or tungsten oxide. Following this, the temperature is increased to a final range of 800°C to 1000°C for a final time period. Another significant patent is for ceramic-coated tungsten powder, which describes a process of coating tungsten powder particles with a ceramic barrier. This coating suppresses the leachability of tungsten in aqueous media and is designed to encapsulate each tungsten particle with a thickness of at least 30 nm, preferably between 200 nm and 500 nm. Various ceramic coatings, such as aluminum oxide, zirconium oxide, and magnesium oxide, can be utilized in this process.

Career Highlights

Stevens has worked with prominent companies in the industry, including Osram Sylvania Inc. and Global Tungsten & Powders Corporation. His experience in these organizations has contributed to his expertise in tungsten and advanced materials.

Collaborations

Throughout his career, Stevens has collaborated with notable colleagues, including Hans-Joachim Lunk and Michael Salmen. These partnerships have likely enhanced his research and development efforts in the field.

Conclusion

Henry J. Stevens is a distinguished inventor whose work in tungsten materials has led to innovative patents that advance the field of materials science. His contributions continue to impact the industry positively.