Hirofumi Otsuka

Title: Hirofumi Otsuka: Innovator in Automotive Technology

Introduction

Hirofumi Otsuka is a notable inventor based in Kiyosu, Japan. He has made significant contributions to the automotive industry, particularly in the development of weatherstripping and glass run components. With a total of 9 patents to his name, Otsuka's innovations have enhanced the functionality and durability of automotive doors.

Latest Patents

Otsuka's latest patents include an outer weatherstrip designed for automobile doors. This weatherstrip is formed of a thermoplastic elastomer and is fitted to the upper edge portion of a door panel. It effectively seals the space between the door panel and the door glass. The design features a main body with a vehicle interior-side wall, a top wall, and a vehicle exterior-side wall, along with upper and lower seal lips that protrude towards the door glass. Additionally, a plasticizer-rich layer is incorporated to improve the seal's performance.

Another significant patent is the automotive glass run, which is attached to the inner periphery of a door frame. This component guides the ascending and descending movement of the door glass and is also made from a thermoplastic elastomer. The glass run features a U-shaped cross-section and includes a holding lip that abuts the door frame, ensuring a secure fit. A plasticizer-rich layer is also present to enhance the component's durability.

Career Highlights

Throughout his career, Hirofumi Otsuka has worked with prominent companies such as Toyoda Gosei Co., Ltd. and Japan Vilene Company, Ltd. His experience in these organizations has allowed him to refine his skills and contribute to innovative automotive solutions.

Collaborations

Otsuka has collaborated with notable coworkers, including Masatoshi Hotta and Masatoshi Nojiri. Their combined expertise has fostered a creative environment that has led to the development of advanced automotive technologies.

Conclusion

Hirofumi Otsuka's contributions to the automotive industry through his patents and collaborations highlight his role as an innovator. His work continues to influence the design and functionality of automotive components, ensuring a better experience for users.