Company Filing History:
1 out of 107 
1 out of 33 Years Active: 2008
Title: Katsumi Yamaguchi: Innovator in Automotive Sound Absorption
Introduction
Katsumi Yamaguchi is a notable inventor based in Nara, Japan. He has made significant contributions to the field of automotive materials, particularly in enhancing sound absorption within car interiors. His innovative approach has led to the development of a unique foam sheet that addresses the challenges of sound management in vehicles.
Latest Patents
Yamaguchi holds a patent for a foam sheet designed for car interior members. This invention provides a solution for creating a foam sheet that can be molded into various shapes while maintaining excellent sound absorbency. The foam sheet comprises a modified polyphenylene ether-based resin foam with an open cell ratio of 50% or more. The design features pore portions that are open to one face, allowing vibration energy from sounds to be effectively converted into thermal energy, thereby enhancing sound absorption.
Career Highlights
Throughout his career, Katsumi Yamaguchi has worked with prominent companies in the automotive industry. He has been associated with Sekisui Plastics Co., Ltd. and Hayashi Telempu Co., Ltd., where he has contributed to the development of innovative materials for vehicle interiors. His work has been instrumental in advancing the quality and performance of automotive components.
Collaborations
Yamaguchi has collaborated with several professionals in his field, including Hiroyuki Ueno and Hiroyuki Sadakuni. These collaborations have fostered a creative environment that has led to the successful development of new technologies and materials.
Conclusion
Katsumi Yamaguchi's contributions to automotive sound absorption through his innovative foam sheet patent exemplify his dedication to improving vehicle interiors. His work continues to influence the industry, showcasing the importance of innovation in enhancing user experience in automobiles.