This inventor holds 6 USPTO granted patents. Top assignees: Prodeco, Inc., Unc Recovery Corporation, Phosphate Engineering and Construction Company. Active years: 1983-1990.
Company Filing History:
2 out of 7 
2 out of 4 
1 out of 5 Years Active: 1983-1990
Title: The Innovative Contributions of Donald B. Stain
Introduction
Donald B. Stain is a notable inventor based in Lakeland, FL (US), recognized for his significant contributions to the field of chemical engineering. With a total of 6 patents to his name, Stain has developed innovative solutions that address critical environmental and industrial challenges.
Latest Patents
Stain's latest patents include the "Selective removal of chromium, nickel, cobalt, copper and lead cations," which describes a method for treating aqueous effluent solutions containing metal cations. This process utilizes an extractant comprising an organophosphinic acid, a di-2-ethylhexyl phosphoric acid, and/or an aliphatic amine to selectively separate harmful metal cations from the solution. The extraction techniques employed in this patent include liquid-liquid extraction using mixer settlers or columns, liquid membrane extraction, and selective supported membrane extraction.
Another significant patent is the "Production of monobasic potassium phosphate with low chloride content." This invention outlines a process for producing relatively pure monopotassium phosphate from wet process phosphoric acid. The method involves mixing phosphoric acid with potassium chloride and recycled components, followed by heating to allow hydrogen and chloride to evolve as gases. The resulting melt is treated to remove impurities, yielding a crystalline product with low chloride content.
Career Highlights
Throughout his career, Donald B. Stain has worked with several companies, including Prodeco, Inc. and Unc Recovery Corporation. His work in these organizations has contributed to advancements in chemical processes and environmental remediation technologies.
Collaborations
Stain has collaborated with notable professionals in his field, including Alex Magdics and Ralph E. Worthington. These partnerships have fostered innovation and the development of effective solutions in chemical engineering.
Conclusion
Donald B. Stain's inventive spirit and dedication to addressing environmental challenges through innovative chemical processes have made him a significant figure in his field. His contributions continue to influence the industry and inspire future innovations.