Youhachi Yamashita

Title: Youhachi Yamashita: Innovator in Ceramic and Piezoelectric Materials

Introduction

Youhachi Yamashita is a notable inventor based in Kawasaki, Japan. He has made significant contributions to the field of materials science, particularly in the development of high dielectric constant materials and piezoelectric oxide materials. With a total of 2 patents, his work has implications for various technological applications.

Latest Patents

Yamashita's latest patents include a high dielectric constant type ceramic composition. This innovative material comprises a composite that includes at least one of BaO and CaO, PbO, Fe₂O₃, Nb₂O₅, WO₃, and CuO. The composite material is represented by a specific general formula that enhances its dielectric properties. Another significant patent is for a piezoelectric oxide material suitable for ultrasonic probes. This material features a general formula with specific parameters for additives, ensuring a thickness coupling factor (Kt) of 50% or more, and a ratio of Kt to planar coupling factor (Kp) of 10 or more.

Career Highlights

Yamashita is associated with Tokyo Shibaura Denki Kabushiki Kaisha, a company known for its advancements in electrical and electronic technologies. His work at this institution has allowed him to focus on innovative materials that can be utilized in various applications, including electronics and medical devices.

Collaborations

Throughout his career, Yamashita has collaborated with notable colleagues such as Tadashi Ido and Mituo Harata. These collaborations have contributed to the advancement of research and development in their respective fields.

Conclusion

Youhachi Yamashita's contributions to the field of materials science, particularly in high dielectric constant and piezoelectric materials, highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to enhancing the performance of materials used in various applications.