Company Filing History:
3 out of 3,002 
1 out of 832,912 Years Active: 1993-1999
Title: **Innovations of Donald Lee Mittendorf: Advancements in Rhenium Technology**
Introduction
Donald Lee Mittendorf, based in Mesa, AZ, is a notable inventor with a proven track record of innovation, holding a total of four patents. His work primarily focuses on advancements in rhenium technology, with significant contributions to rocket nozzle design and metal joining processes.
Latest Patents
Mittendorf's latest patents showcase his expertise in materials engineering and manufacturing techniques. One of his prominent inventions is a **Method for making a rhenium rocket nozzle**, which involves creating a molybdenum mandrel shaped to form the nozzle. He utilizes a layered process, depositing rhenium and wrapping it with rhenium wire, followed by additional layers of rhenium or ruthenium, and completing the assembly with hot isostatic pressing. This innovation significantly enhances the performance and durability of rocket nozzles.
Another key patent is the **Method for joining rhenium to niobium**, a technique designed to minimize the formation of brittle intermetallic compounds. This process begins with the application of ruthenium on both rhenium and columbium surfaces. By heating the assembled components and using a braze foil, Mittendorf successfully joins these difficult materials, ensuring improved performance in various applications.
Career Highlights
Throughout his career, Mittendorf has collaborated with prominent companies, including AlliedSignal Inc., where he applied his knowledge and skills in innovative projects. His contributions have positively impacted the field of aerospace and materials science.
Collaborations
Mittendorf has worked alongside accomplished professionals such as Gary A. West and Trevor G. Sutton. These collaborations have further enriched his inventions and facilitated groundbreaking advancements in their shared fields of expertise.
Conclusion
Donald Lee Mittendorf continues to be an inspiring figure in the world of innovation, particularly in the realm of rhenium technology. Through his patents and collaborative efforts, he has made significant strides that contribute to the advancement of aerospace engineering and material sciences. As technology evolves, his work remains a testament to the importance of innovation and the impact of dedicated inventors.