Company Filing History:
Years Active: 1988
Title: Innovations by Seiichi Yoshida in High Dielectric Constant Ceramic Materials
Introduction
Seiichi Yoshida, an accomplished inventor based in Katsushika, Japan, has made significant contributions to the field of materials science, particularly in the development of high dielectric constant ceramic materials. His innovative approaches have garnered attention, leading to the issuance of a valuable patent that highlights his expertise and creativity.
Latest Patents
Yoshida holds a patent for a "High dielectric constant ceramic material and method of manufacturing." This patent addresses the need for ceramic materials with a high dielectric constant (ranging from K=2300 to 7000), along with a high insulation resistance (CR=4000 to 18000 ohmF). Notably, the invention demonstrates low temperature dependence (±10% to ±22%, -33%) for dielectric constant across a wide temperature range, specifically from -55 to +125 degrees Celsius. The innovative method involves mixing BaTiO3 powder, primarily consisting of particles sized between 0.7 to 3 μm, with other perovskite-structured compounds composed mainly of oxides such as Pb, Ba, Sr, Zn, Nb, Mg, and Ti before sintering. This technique also allows substitutions of titanium in BaTiO3 with zirconium or tin, and barium with strontium, calcium, or cerium, optimizing the material properties for various applications.
Career Highlights
Seiichi Yoshida is affiliated with Toshiba Corporation, where he leverages his extensive knowledge and research capabilities. His career is marked by a commitment to advancing technology through innovative materials, making him a valuable asset in the realm of ceramic materials and dielectric applications.
Collaborations
Throughout his career, Yoshida has collaborated with notable coworkers, including Osamu Furukawa and Motomasa Imai. These collaborations have fostered an environment of creativity and technological advancement, enabling the development of pioneering materials that push the boundaries of current engineering practices.
Conclusion
In summary, Seiichi Yoshida's work on high dielectric constant ceramic materials highlights his innovative spirit and technical prowess. His contributions not only exemplify the potential of advanced materials in technology but also reflect the collaborative nature of research and development within the industry. As we continue to explore the applications of these materials, Yoshida's inventions will undoubtedly play a crucial role in the future of electrical and electronic engineering.