David E Jech is a notable inventor based in Tucson, AZ, who has made significant contributions to the field of materials science. He holds a total of five patents, showcasing his expertise and innovative spirit in developing advanced materials.

Latest Patents

One of his latest patents is focused on high conductivity copper/refractory metal composites and the method for making them. This invention greatly improves the thermal conductivity of a sintered copper/refractory metal composite, which has a maximum porosity of about 1%. The composite contains phosphorus and a sintering aid in a specified weight ratio, enhancing its performance. The composition includes approximately 5% to 30% copper, 0.2% to 0.6% sintering aid, and 0.08% to 0.3% phosphorus, with the remaining metal being a refractory metal. The phosphorus to sintering aid ratio ranges from about 0.25 to 0.55, and in one embodiment, the sintering aid contains cobalt while the refractory metal is tungsten.

Another significant patent by Jech involves functionally graded metal substrates and the process for making them. This invention provides a functionally-graded metal substrate made of at least two metal compositions, featuring a functional insert surrounded by a body. The process involves placing a functional insert powder composition in a compact of a surrounding body powder composition, followed by sintering both compositions to form a sintered part. This part can be infiltrated with a molten metal compound, resulting in a substrate with a density of at least 90% of theoretical. The invention is particularly useful in microelectronic packaging, where a heat-generating component can be attached to the substrate.

Career Highlights

David E Jech is currently employed at Brush Wellman, Inc., where he continues to innovate and develop advanced materials. His work has significantly impacted the field, particularly in the development of high-performance metal composites.

Collaborations

Throughout his career, Jech has collaborated with notable colleagues, including Juan L Sepulveda and Anthony B Traversone. These collaborations have contributed to the advancement of his research and the successful development of his patents.

Conclusion

David E Jech is a distinguished inventor whose work in materials science has led to the development of innovative technologies. His patents reflect his commitment to enhancing the performance of metal

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