Yoshitugu Eguchi is a notable inventor based in Ibaraki, Japan. He has made significant contributions to the field of materials science, particularly in the development of advanced laminated sheets and foamed bodies. With a total of 4 patents to his name, his work has garnered attention for its innovative approaches and practical applications.

Latest Patents

One of his latest patents is a copper-foiled laminated sheet for flexible printed circuit boards. This invention allows for the preparation of a printed circuit sheet that maintains see-throughness after the patterning process through etching of the copper foil. Unlike conventional laminates that use electrolytic copper foil with a surface roughness of 10 or larger, Eguchi's laminate employs a rolled copper foil with a surface roughness of 1.5 to 5. This innovation ensures that the adhesive layer, from which the copper foil has been removed, does not exhibit undue roughness, allowing for a parallel light-beam transmission of at least 50% and an overall light transmission of at least 70%, thus ensuring excellent see-through visibility.

Another significant patent is a method for the preparation of a foamed body of a vinyl chloride-based resin composition. This method introduces a novel approach to creating a foamed body with a very fine and uniform cellular structure in a continuous process while maintaining low costs. The method utilizes a binary volatilizable blowing agent composed of a first organic compound that is either halogenated or unhalogenated, and a second organic compound selected from various categories, including halogenated or unhalogenated aromatic hydrocarbons. The process is preferably conducted using an extruder, where the resin composition is heated and impregnated with the blowing agent before being extruded through a die.

Career Highlights

Yoshitugu Eguchi is currently associated with Shin-Etsu Chemical Co., Ltd., a leading company in the chemical industry. His work at the company has been instrumental in advancing the development of innovative materials that have practical applications in various industries.

Collaborations

Throughout his career, Eguchi has collaborated with notable colleagues, including Kiyoshi Imada and Masaru Miyashita. These collaborations have contributed to the successful development of his patented technologies.

Conclusion

Yoshitugu Eguchi's contributions to the field

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