Takeshi Maruyama

Title: **Innovations of Takeshi Maruyama: A Pioneer in Copper Powder Technology**

Introduction

Takeshi Maruyama, based in Kyoto, Japan, is a prolific inventor recognized for his significant contributions to the field of materials science, particularly in the development of copper powders. With a total of four patents to his name, Maruyama’s work focuses on enhancing the properties of copper-based materials for various applications through innovative techniques.

Latest Patents

Among his latest patents, two notable inventions stand out. The first is a patent for “Lamination Shaping Copper Powder and Laminated and Shaped Product,” which introduces a copper powder enhanced with tin (Sn). This invention employs a laminating and shaping method that utilizes a fiber laser as a heat source to yield a high-density laminated and shaped product. By judiciously reducing the electrical conductivity of copper, the resultant product boasts both high density and remarkable electrical conductivity. The patent specifies that the copper powder should contain 0.5 wt % or more of tin, ideally more than 5.0 wt %, while maintaining a maximum of 6.0 wt % for optimal electrical conductivity.

The second patent in this category involves the development of a copper powder that incorporates phosphorus (P). Similar to the first, this invention aims to produce a high-density laminated and shaped product utilizing a fiber laser. The copper powder's formulation targets an inclusion of 0.01 wt % or more of phosphorus, preferably 0.04 wt %, while it should not exceed 0.30 wt % to maintain desirable conductivity.

Career Highlights

Throughout his career, Takeshi Maruyama has contributed his expertise to esteemed organizations, including Fukuda Metal Foil & Powder Co., Ltd., and Daihen Corporation. His work in these companies has facilitated advancements in material applications and innovations in copper powder technology.

Collaborations

Maruyama has worked alongside notable colleagues, including Hiroaki Okubo and Yoshito Nishizawa. These collaborations have likely enriched his research endeavors and propelled the advancements in the innovations he pursued.

Conclusion

Takeshi Maruyama stands out as a notable inventor in the field of material science, with groundbreaking patents that enhance the applications of copper powders. His inventions not only contribute to scientific knowledge but also hold significant potential for industrial application, showcasing the critical connection between innovation and engineering in today's technology-driven world.