Hidefumi Kasai

Title: Innovations by Hidefumi Kasai

Introduction

Hidefumi Kasai is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of engineering, particularly in the areas of resin molding and timepiece manufacturing. With a total of 3 patents, his work reflects a commitment to innovation and quality.

Latest Patents

One of his latest patents is a resin molding mold. This invention involves a cavity for molding resin, formed by a fixed mold and a moving mold. A diamond-like carbon film is applied to the surface of the mold that contacts a stamper, with an intermediate layer made of materials such as silicon and tungsten. This design drastically increases the useful life of both the mold and the stamper, preventing damage during the molding process.

Another significant patent is a timepiece hand manufacturing method. This method allows for the creation of extremely thin and lightweight timepiece hands that are also strong and rigid. The hands are formed as open shells through hard nickel electro-forming, minimizing mechanical working to avoid bending distortion. This innovation enables the production of timepiece hands that are substantially thinner than those made using traditional methods.

Career Highlights

Hidefumi Kasai is currently employed at Citizen Watch Company, Ltd., where he continues to develop innovative solutions in watchmaking and molding technologies. His work has been instrumental in enhancing the performance and durability of products in these industries.

Collaborations

He has collaborated with notable coworkers such as Tadao Enomoto and Yukio Miya, contributing to a dynamic team focused on advancing technology in their respective fields.

Conclusion

Hidefumi Kasai's contributions to innovation in resin molding and timepiece manufacturing highlight his expertise and dedication to engineering excellence. His patents not only improve product performance but also set new standards in the industry.