Company Filing History:
Years Active: 1985-1989
Title: Innovations of Norman L Stewart, Jr.
Introduction
Norman L Stewart, Jr. is an accomplished inventor based in Lake Alfred, FL (US). He has made significant contributions to the field of phosphoric acid processing, holding a total of 2 patents. His work focuses on enhancing the quality and stability of phosphoric acid, which is crucial for agricultural applications.
Latest Patents
One of his latest patents is titled "Oxidation-reduction process for enhancing the color of and stabilizing." This invention provides a two-stage oxidation/reduction process for preparing commercially valuable, color-enhanced, and stabilized low viscosity wet process phosphoric acid. The process yields improved acid that can be concentrated to superphosphoric acid or converted to high-quality liquid fertilizer by reacting with ammonia, all while preventing reversion to black color or excessive sludge formation. The preferred method involves oxidizing a starting black acid with an oxidizing agent and then subjecting it to a reduction step to lower the valence of metallic impurities.
Another notable patent is the "Method of lowering the magnesium impurity level of wet-process." This process treats wet-process weak phosphoric acid solution to significantly reduce magnesium impurities, allowing for the subsequent concentration of the acid for use in liquid fertilizers. By controlling the evaporation of water and maintaining specific temperature conditions, magnesium impurity crystals are formed, which can be effectively removed through conventional centrifugation.
Career Highlights
Norman L Stewart, Jr. is associated with Farmland Industries, Inc., where he applies his expertise in chemical processes to develop innovative solutions for the agricultural sector. His work has contributed to advancements in fertilizer production, enhancing both efficiency and product quality.
Collaborations
Throughout his career, Stewart has collaborated with notable colleagues, including Ken Edward Kranz and David D Leavitt. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.
Conclusion
Norman L Stewart, Jr. is a prominent inventor whose work in phosphoric acid processing has led to significant advancements in agricultural applications. His patents reflect a commitment to improving product quality and stability, making a lasting impact in the field.