Ikuo Yosejima

Title: Ikuo Yosejima: Innovator in Heat-Expandable Microspheres

Introduction

Ikuo Yosejima is a notable inventor based in Yao, Japan, recognized for his contributions to the field of materials science. He holds a total of five patents, showcasing his innovative spirit and dedication to advancing technology.

Latest Patents

Yosejima's latest patents focus on heat-expandable microspheres, which are designed to enhance various applications. One of his patents details a process for producing these microspheres, which consist of a shell made from thermoplastic resin and a core material encapsulated within. The core material includes a blowing agent with a boiling point lower than the softening point of the thermoplastic resin, along with a gas migration inhibitor that has a higher boiling point. The specific ratio of the gas migration inhibitor to the core material is crucial, ranging from at least 1 weight percent to below 30 weight percent. The average particle size of these microspheres varies from 1 to 100 micrometers, making them versatile for different uses.

Another patent outlines a method for producing heat-expandable microspheres that exhibit a high expanding ratio. These microspheres can be thermally expanded into hollow particulates, which possess excellent repeated-compression durability. This innovative method encapsulates a blowing agent within a thermoplastic resin shell, ensuring effective production of high-quality microspheres.

Career Highlights

Yosejima is currently employed at Matsumoto Yushi-seiyaku Co., Ltd., where he continues to develop and refine his inventions. His work has significantly impacted the field of materials science, particularly in the development of advanced microsphere technologies.

Collaborations

Throughout his career, Ikuo Yosejima has collaborated with esteemed colleagues, including Toshiaki Masuda and Katsushi Miki. These partnerships have fostered a creative environment that encourages innovation and the sharing of ideas.

Conclusion

Ikuo Yosejima's contributions to the field of heat-expandable microspheres exemplify his commitment to innovation and excellence. His patents not only advance technology but also pave the way for future developments in materials science.