Tomohide Yamada

Title: **Innovations of Tomohide Yamada: Pioneering Electrical Inspection Technology**

Introduction

Tomohide Yamada, a distinguished inventor based in Komaki, Japan, has made notable contributions to the field of electrical inspection technology. With a total of three patents to his name, Yamada's work primarily revolves around the creation of advanced materials and methods in electrical engineering.

Latest Patents

Among his latest innovations is a patent titled "Electrical inspection substrate unit and manufacturing method therefore." This patent describes an electrical testing substrate unit that features a multi-layer ceramic substrate composed of mullite and borosilicate glass as its core components. The borosilicate glass includes an alkali metal oxide in a specific range of 0.5 to 1.5 mass percent, which plays a crucial role in its performance. The substrate's mean coefficient of linear thermal expansion ranges from 3.0 to 4.0 ppm/°C between -50°C and 150°C. Moreover, the thermal expansion coefficients of the substrate and a to-be-tested silicon wafer maintain a critical relation across a designated temperature range. Yamada has also developed a method of manufacturing capacitors intended for use in wiring boards, featuring laminated dielectric layers and strategically placed inner and dummy electrode layers.

Career Highlights

Tomohide Yamada is a key figure at NGK Spark Plug Company Limited, where his expertise and innovative spirit have gained recognition. His focus on developing high-performance electrical components continues to drive the company's technological advancements. His inventions are essential for enhancing the reliability and efficiency of electrical inspection processes.

Collaborations

Yamada collaborates with esteemed colleagues, including Motohiko Sato and Kazuhiro Hayashi. Together, they combine their technical know-how to advance the field of electrical engineering and contribute to ground-breaking developments within their organization.

Conclusion

Through his innovative inventions and dedication to advancing electrical inspection technology, Tomohide Yamada stands as a prominent inventor in his field. His contributions not only enhance the functionality of electrical components but also pave the way for future innovations in engineering.