Company Filing History:
Years Active: 1995-2016
Title: Dennis Lee Hammond: Innovator in Powder Metallurgy
Introduction
Dennis Lee Hammond is a notable inventor based in Richfield, Ohio, with a significant contribution to the field of powder metallurgy. He holds a total of 13 patents, showcasing his innovative approaches and solutions in this specialized area of materials science.
Latest Patents
Hammond's latest patents include a method for protecting powder metallurgy alloy elements from oxidation and/or hydrolyzation during sintering. This method involves several steps: first, coating the admixed alloy elements in an inert atmosphere with a hydrophobic lubricant that is capable of becoming mobile during pressing, with the lubricant amount being at least 45% of the total volume of all components to be added to the base metal powder. Next, the lubricant-coated admixed alloy elements are mixed with the base metal powder to form a mixture. This mixture is then pressed to create a pre-sintered part with a green density ranging from about 95% to about 98% of a calculated pore-free density, followed by sintering the part. Another significant patent involves metal powder compositions for pressed powder metallurgy and methods of forming metal parts using these compositions. In this invention, the outer surface of primary metal particles in the metal powder composition is chemically cleaned to remove oxides in situ, which creates ideal conditions for achieving near full density metal parts during sintering.
Career Highlights
Throughout his career, Hammond has worked with several companies, including Apex Advanced Technologies, LLC and Ferro Corporation. His work has significantly impacted the development of advanced materials and manufacturing processes.
Collaborations
Hammond has collaborated with notable professionals in his field, including Anthony S. Scheibelhoffer and Karl-Heinz Schofalvi. These collaborations have further enriched his contributions to powder metallurgy.
Conclusion
Dennis Lee Hammond's innovative work in powder metallurgy has led to significant advancements in the field, as evidenced by his numerous patents and collaborations. His contributions continue to influence the development of new materials and manufacturing techniques.