Location History:
- Pittsburgh, PA (US) (1977 - 1982)
- Wilkinsburg, PA (US) (1987)
Company Filing History:
2 out of 8,033 
1 out of 2,921 
Years Active: 1977-1987
Title: The Innovative Contributions of Edward Mitchell
Introduction
Edward Mitchell is a notable inventor based in Pittsburgh, PA, with a significant impact in the field of material science and engineering. He holds three patents that showcase his innovative approaches to solving complex problems, particularly in the areas of filter technology and uranium recovery processes.
Latest Patents
One of Mitchell's latest patents is a method for reducing the volume of a material containing addition polymerizable bonds. This method involves contacting the material with butyrolactone to dissolve the soluble organic material and form a slurry. The process includes adding a small percentage of an addition polymerizable catalyst to polymerize and solidify the slurry. Additionally, an ethylenically unsaturated monomer, such as styrene, can be incorporated to aid in the polymerization process. This method is particularly beneficial for filter elements that contain radioactive contaminants.
Another significant patent focuses on maintaining reductive strip efficiency in uranium recovery processes. In this process, wet process phosphoric acid is oxidized with nitric acid to ensure that uranium values are in the +6 state. The organic extractant then contacts the acid to extract the +6 uranium along with nitrate and/or nitrite ions. Urea is introduced to react with these ions, preventing the organic from extracting them. The organic is then reductively stripped using an aqueous solution containing ferrous ions, ensuring that the efficacy of the ferrous ions remains intact.
Career Highlights
Throughout his career, Edward Mitchell has worked with prominent companies such as Westinghouse Electric Corporation and Union Carbide Corporation. His experience in these organizations has contributed to his expertise and innovative capabilities in the field.
Collaborations
Mitchell has collaborated with notable individuals, including John W. Koenst, Jr. and Thomas S. Snyder. These collaborations have likely enriched his work and led to further advancements in his projects.
Conclusion
Edward Mitchell's contributions to innovation, particularly in filter technology and uranium recovery, highlight his role as a significant inventor. His patents reflect a commitment to addressing complex challenges through inventive solutions.