Susumu Shigemasa

Title: The Innovative Contributions of Susumu Shigemasa

Introduction

Susumu Shigemasa, an esteemed inventor based in Yamaguchi-ken, Japan, has made significant strides in the field of materials for color picture tubes. With a total of two patents to his name, his work is characterized by innovative approaches to manufacturing techniques and material properties that enhance the performance of display technologies.

Latest Patents

Shigemasa’s latest patents include a revolutionary **Method for Manufacturing an Aperture Grill Material for Color Picture Tube**. This invention features an aperture grill material composed of a low-carbon alloy steel sheet with precise percentages of copper (0.05 to 2.5% by weight) and phosphorus (0.001 to 0.4% by weight). The structure of this material demonstrates excellent tensile strength and superior magnetic characteristics compared to existing materials. The production method involves cold-rolling the steel strip followed by a precipitation process at temperatures ranging from 300 to 800°C.

Another notable patent is the **Method for Production of Invar Alloy Steel Sheet Material for Shadow Mask**. This invention presents an invar alloy steel sheet that boasts improved etchability, making it economical and efficient for use in shadow masks. Produced from a nickel-iron alloy, the manufacturing process includes primary and secondary cold rolling, allowing for a texture percentage of 60 to 80%, which is vital for color picture tubes that incorporate the shadow mask.

Career Highlights

Shigemasa has dedicated his career to advancing material technologies that play a crucial role in visual display systems. His work at Toyo Kohan Co., Ltd. highlights his commitment to innovation and excellence in the industry, as he consistently drives improvements in product performance and manufacturability.

Collaborations

Throughout his career, Shigemasa has collaborated with fellow inventors such as Tsuneyuki Ide and Yasuo Tahara. These partnerships foster a rich exchange of ideas and technical expertise, allowing for the development of groundbreaking inventions that continue to shape the future of display technologies.

Conclusion

In conclusion, Susumu Shigemasa's contributions to the field of materials for color picture tubes underscore the importance of innovation in technology. With his insightful approaches and collaborative spirit, he remains a significant figure in the realm of inventions, paving the way for future advancements in display systems.