Torao Hashimoto

Title: Torao Hashimoto: Innovator in Optical Technologies and Rigid Polyurethane Foam

Introduction

Torao Hashimoto is a notable inventor based in Yokohama, Japan. He has made significant contributions to the fields of optical technologies and materials science. With a total of 3 patents to his name, Hashimoto continues to push the boundaries of innovation.

Latest Patents

One of Hashimoto's latest patents is for an optical waveguide tube. This invention comprises a tubular cladding filled with a solid core that has a higher refractive index than the cladding. A light transmissive window member is positioned in close contact with the core's end face on the light incident side. This design protects the core end face from thermal influence and contamination. The securing means for the window member may include a tape wrapped around the cladding and window member, a heat shrinkable sleeve, or a ferrule. The ferrule surrounds the outer periphery of the cladding at each end, preventing the core from projecting out of the cladding.

Another significant patent involves a method for making and then removing a molded article of rigid polyurethane foam. This process utilizes a mold with separable upper and lower sections that define a cavity. A film of polypropylene is vacuum formed to fit the mold cavity and secured to the lower mold section. A rigid polyurethane foam-forming raw material is introduced into the cavity, causing it to foam and expand. The molded article is then lifted from the mold cavity using pneumatic pressure or an ejector pin, allowing for easy removal without taking the entire film out of the mold.

Career Highlights

Torao Hashimoto is currently employed at Bridgestone Corporation, where he applies his expertise in innovation and technology. His work has contributed to advancements in both optical and material sciences, showcasing his versatility as an inventor.

Collaborations

Throughout his career, Hashimoto has collaborated with notable colleagues, including Keiichiro Tabata and Yoichi Nabeshima. These partnerships have fostered a creative environment that encourages the development of groundbreaking technologies.

Conclusion

Torao Hashimoto is a distinguished inventor whose work in optical technologies and rigid polyurethane foam has made a lasting impact. His innovative spirit and dedication to research continue to inspire advancements in various fields.