Kiyoshi Hotta

Title: Kiyoshi Hotta: Innovator in Phosphoric Acid Purification

Introduction

Kiyoshi Hotta is a notable inventor based in Shiga, Japan, recognized for his contributions to the field of chemical engineering. He holds a total of six patents, showcasing his innovative approach to solving complex problems in the industry.

Latest Patents

One of his latest patents is a method for the purification of phosphoric acid, specifically high purity polyphosphoric acid. This invention provides a novel purification method that involves bringing phosphoric acid containing arsenic into contact with hydrogen halide, effectively removing the arsenic without the need for filtration or deaeration steps. This method is particularly advantageous for high concentration phosphoric acid and can be implemented at a low cost. Additionally, it results in a high purity polyphosphoric acid with an arsenic content of not more than 1 ppm, along with low levels of heavy metals, silica, and sodium.

Another significant patent by Hotta involves aromatic diamine and aromatic dicarboxylate, further demonstrating his expertise in chemical processes.

Career Highlights

Throughout his career, Kiyoshi Hotta has worked with prominent companies, including Toyo Boseki Kabushiki Kaisha. His work has significantly impacted the chemical industry, particularly in the purification processes of phosphoric acid.

Collaborations

Hotta has collaborated with notable individuals in his field, including Fuyuhiko Kubota and Kunio Kimura. Their joint efforts have contributed to advancements in chemical engineering and innovation.

Conclusion

Kiyoshi Hotta's innovative methods and patents have made a lasting impact on the chemical industry, particularly in the purification of phosphoric acid. His work continues to influence the field and showcases the importance of innovation in solving complex industrial challenges.