Tomohiko Katayama

Title: Tomohiko Katayama: Innovator from Osaka

Introduction

Tomohiko Katayama is an esteemed inventor based in Osaka, Japan, known for his contributions to the field of electrical engineering. With a focus on innovations related to power cable technologies, Katayama has secured a total of two patents that showcase his ingenuity and technical prowess.

Latest Patents

His latest patents include a resin composition and an innovative method for producing direct-current power cables. The resin composition features a unique formulation involving a base resin made from polyolefin and an inorganic filler. The inorganic filler comprises a core part containing magnesium hydroxide (Mg(OH)) and a covering part of magnesium oxide (MgO) particles surrounding the core. The composition is meticulously designed to contain between 0.1 and 5 parts by mass of the inorganic filler relative to 100 parts by mass of the base resin, with specific volume fractions of Mg(OH) ensured in each particle.

In his second patent, Katayama introduced a direct-current cable that comprises a conductive portion and an insulating layer made up of cross-linked base resin and inorganic filler. The base resin, made from polyethylene, is enhanced by an inorganic filler with a BET specific surface area between 5 m/g and 150 m/g and a mean volume diameter not exceeding 1.0 µm. The innovative aspect also lies in the precise mass ratio of the inorganic filler to base resin and the inclusion of a cross-linking agent containing organic peroxide.

Career Highlights

Katayama is associated with Sumitomo Electric Industries, Limited, a global leader in electric and communications wire and cable technology. His role in the company has enabled him to focus on cutting-edge research and development in materials and applications related to electrical infrastructure.

Collaborations

Throughout his career, Katayama has worked alongside notable colleagues such as Takanori Yamazaki and Yoshinao Murata. Their collaborative efforts have driven advancements in their respective fields, contributing to innovations that address contemporary challenges in electrical engineering and materials science.

Conclusion

Tomohiko Katayama's contributions to the development of direct-current power cables and innovative resin compositions reflect his commitment to enhancing electrical technology. His work at Sumitomo Electric Industries, paired with his collaborations, positions him as a significant figure in the landscape of modern invention and innovation. As he continues to develop new technologies, the impact of his inventions will likely resonate throughout the industry for years to come.