Toshifumi Koyanagi

Title: **Inventor Toshifumi Koyanagi: Pioneering Innovations in Battery Technology and Plated Materials**

Introduction

Toshifumi Koyanagi, an innovative inventor based in Kudamatsu, Japan, has made significant contributions to the field of materials science, particularly in plating techniques and battery technology. With a total of five patents to his name, Koyanagi's work focuses on enhancing the performance and reliability of plated materials and solid-state batteries.

Latest Patents

Among his most recent inventions is the **Roughened Plated Sheet**, which features a roughened plated layer created from a nickel-plated layer and a zinc-plated layer, arranged on a metal substrate. Notably, this design ensures a ten-point average roughness of Rz of 3 μm or more, enhancing the surface characteristics of the metal substrate, which is a steel sheet.

Additionally, Koyanagi has developed a **Sulfide All-Solid-State Battery**. This innovative battery includes a highly adhesive anode current collector that is resistant to sulfurization. The design consists of a cathode layer, an anode layer, and a sulfide solid electrolyte layer placed between them. The anode current collector, made from electrolytic iron foil, boasts surface roughness measurements tailored for optimal performance.

Career Highlights

Throughout his career, Koyanagi has collaborated with notable companies, including Toyo Kohan Co., Ltd. and Toyota Jidosha Kabushiki Kaisha. His experiences in these esteemed organizations have significantly influenced his approach to problem-solving and innovation in material science.

Collaborations

Koyanagi has had the opportunity to work alongside talented individuals such as Shinichirou Horie and Etsuro Tsutsumi. Their collaboration has further advanced the development of technologies focused on improving the quality and efficiency of products in the market.

Conclusion

Toshifumi Koyanagi's dedication to innovation in the realms of plated materials and battery technology establishes him as a noteworthy figure in engineering. Through his patents, he continues to contribute to the progress of material science, driving advancements that are poised to impact future technologies significantly. His work inspires the next generation of inventors and engineers striving to develop groundbreaking solutions.