Location History:
- Nishitama, JP (1991)
- Hamura, JP (1994)
Company Filing History:
Years Active: 1991-1994
Title: Juji Ishigame: Innovator in Ceramic Substrate Technology
Introduction
Juji Ishigame is a notable inventor based in Nishitama, Japan. He has made significant contributions to the field of ceramic substrates, holding a total of 2 patents. His work focuses on developing materials that enhance the performance and efficiency of electronic components.
Latest Patents
Ishigame's latest patents include a ceramic substrate sintered at low temperatures. This innovative substrate comprises 20 to 50% by volume of an anorthite crystal phase, 1 to 20% by volume of a gahnite crystal phase, and the balance as a glass phase. It also contains 35 to 50% by weight of alumina as a filler. The substrate can be sintered at temperatures lower than 900°C, achieving a mechanical strength of over 2500 kgf/cm² and a thermal expansion coefficient of less than 60×10⁻⁷ /°C. This allows for the use of Au, Ag, and Cu as conductors, making it comparable to existing alumina substrates. Another patent involves an insulating powder for the formation of a resistant coating, which consists of a glass powder made up of 60 to 70% by weight of ZnO, 19 to 25% by weight of B₂O₃, and 10 to 16% by weight of SiO₂.
Career Highlights
Juji Ishigame is currently associated with Sumitomo Metal Mining Company, Ltd. His work at the company has been pivotal in advancing ceramic substrate technology, contributing to the development of materials that meet the demands of modern electronics.
Collaborations
Ishigame has collaborated with notable coworkers such as Tutomu Kubota and Shu Sekihara. Their combined expertise has fostered innovation in the field of ceramics and materials science.
Conclusion
Juji Ishigame's contributions to ceramic substrate technology exemplify the impact of innovative thinking in material science. His patents reflect a commitment to enhancing the performance of electronic components through advanced materials.