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Years Active: 1993-2005
Title: **Noriyoshi Yamada: Innovator in Polyimide Technology**
Introduction
Noriyoshi Yamada is a notable inventor based in Tokyo, Japan, recognized for his significant contributions to materials science through his innovative polyimide inventions. With a total of two patents, Yamada has made strides in developing materials that excel in various characteristics such as heat resistance and optical properties.
Latest Patents
Yamada's latest inventions include a polyamide acid and polyimide that stand out in terms of performance. The first patent features a polyimide renowned for its exceptional heat resistance, chemical resistance, water repellency, dielectric characteristics, electrical characteristics, and optical characteristics. Specifically, this polyamide acid contains both chlorine and fluorine atoms and is structurally defined by a repeating unit with specified variables related to organic groups and halogens.
In addition, he has developed a dielectric multilayer filter suitable for optical communication systems. This invention utilizes a fluorinated polyimide base layer topped with a dielectric multilayer, allowing for efficient production methods that do not require grinding. The resulting filter is characterized by its uniform physical and optical properties, as well as its excellent durability against warping and curling.
Career Highlights
Noriyoshi Yamada has made significant contributions throughout his career. He has been associated with prominent companies, including Nippon Telegraph and Telephone Corporation and Nippon Shokubai Co., Ltd. His work has been pivotal in advancing the applications of polyimide materials in various industries.
Collaborations
Throughout his career, Yamada has collaborated with notable colleagues, including Taisuke Oguchi and Hiroaki Hanafusa. These collaborations have allowed for the sharing of ideas and expertise, driving innovation in the field of materials science.
Conclusion
In conclusion, Noriyoshi Yamada stands out as an influential inventor in the realm of polyimide technology. His impactful patents reflect a commitment to developing materials with superior properties, paving the way for advancements in optical communication and other fields. The contributions of innovators like Yamada are essential in continuing to push the boundaries of material science and engineering.