Location History:
- Niihama, JA (1976 - 1977)
- Ehime, JP (1990)
- Niihama, JP (1978 - 1991)
Company Filing History:
12 out of 18 
8 out of 6,893 
4 out of 11 Years Active: 1976-1991
Title: Koichi Yamada: Innovator in Sintered Silicon Carbide Technology
Introduction
Koichi Yamada, hailing from Niihama, Japan, is an accomplished inventor known for his significant contributions to materials science, particularly in the field of sintered silicon carbide. With a total of 23 patents to his name, Yamada's work has not only advanced industry standards but also paved the way for new applications of silicon carbide materials.
Latest Patents
Among his most notable inventions, Koichi Yamada has developed a patented method for producing sintered silicon carbide articles. This innovative process ensures a sintered density of at least 90% of the theoretical density and a mechanical flexural strength of 50 kg/mm² or higher. The method involves mixing finely divided alpha-type silicon carbide powder with specific amounts of tar pitch and a boron compound as densification aids. The result is a robust article that is sintered in an inert atmosphere at temperatures ranging from 1950°C to 2300°C.
Another recent patent from Yamada focuses on the creation of a fibrous white electrically conductive material made from alkali titanate fibers. This invention is complemented by a coating composition that includes the conductive material, showcasing his versatile approach to material development.
Career Highlights
Throughout his career, Koichi Yamada has held prominent positions in notable companies, including Sumitomo Aluminium Smelting Company, Ltd. and Sumitomo Chemical Company, Limited. In these roles, Yamada has applied his expertise in materials science to drive innovation and efficiency within the industry.
Collaborations
Yamada has collaborated with esteemed peers such as Takuo Harato and Hisakatsu Kato. These partnerships have contributed significantly to his research endeavors, fostering a collaborative environment that encourages the exchange of ideas and expertise in material sciences.
Conclusion
Koichi Yamada's innovative contributions to the field of sintered silicon carbide and electrically conductive materials underscore his significance as an inventor. With a robust portfolio of patents and a history of impactful collaborations, Yamada continues to influence advancements in materials technology, further establishing his legacy in the realm of innovation.