Shigehisa Hanada

Title: **Innovative Patents of Shigehisa Hanada**

Introduction

Shigehisa Hanada is a prominent inventor based in Otsu, Japan, recognized for his significant contributions to the field of rare metal recovery. Holding four patents, Hanada's work focuses on innovative methods for efficiently separating and recovering valuable metal salts, particularly cobalt and nickel.

Latest Patents

Among his latest inventions, Hanada has developed a **Method of Separating and Recovering Cobalt Salt and Nickel Salt**. This innovative method utilizes a nanofiltration membrane to separate cobalt and nickel salts from a rare metal-containing aqueous solution. The membrane is specifically designed, exhibiting glucose permeability three times greater than that of sucrose, while maintaining low sucrose permeability and high isopropyl alcohol permeability at controlled operating conditions.

Additionally, his **Method for Recovering Rare Metal Salt** outlines a process that begins with an acid treatment step, which leads to a rare metal-containing acidic aqueous solution. This is followed by a separation step using a nanofiltration membrane to obtain monovalent and polyvalent rare metals. The process culminates in a concentration step featuring reverse osmosis membranes to enhance the concentration of desired metals.

Career Highlights

Shigehisa Hanada is currently employed by **Toray Industries, Inc.**, a leading company known for its advanced materials and technologies. His expertise in nanofiltration and metal recovery is an invaluable asset to the organization, further advancing their scientific research and commercial applications.

Collaborations

Throughout his career, Hanada has collaborated with talented individuals such as Masakazu Koiwa and Akshay Garg. These partnerships have likely enriched his inventive processes and provided a collaborative spirit that is crucial in the field of innovation.

Conclusion

In summary, Shigehisa Hanada is a significant figure in the realm of rare metal recovery, with his innovative patents paving the way for more sustainable and efficient methods in the industry. His work not only underscores the importance of technological advancements but also highlights the impact of collaboration among skilled professionals in this evolving field.