Moritaka Shoji

Title: **Inventor Moritaka Shoji: Innovations in Nonlinear Resistors**

Introduction

Moritaka Shoji is a notable inventor based in Hitachi, Japan, recognized for his significant contributions in the field of electrical engineering. With a total of two patents to his name, his work focuses on the development of advanced nonlinear resistors, which play a critical role in various electronic applications.

Latest Patents

Moritaka's latest patents showcase his innovative methods of fabricating nonlinear resistors. The first patent describes a method of fabricating a nonlinear resistor through a mixture of calcinated metallic oxides combined with ZnO and SiO2. This mixture is granulated, compacted, and sintered to create the resistor. Following the sintering process, the formed ZnO resistor elements undergo heat treatment, ideally in a two-step process, to enhance their functional properties.

His second patented innovation is a nonlinear voltage-dependent resistor along with the method for its manufacturing. This involves applying a paste that consists of Li2CO3, SiO2, Sb2O3, and Bi2O3 on the side surface of a sintered ZnO based nonlinear voltage-dependent resistor body. This coating is baked to form a high-resistance side surface, significantly improving the impulse current withstand of the resistor. The precise proportions of the paste constituents include approximately 1 to 2.5 mol % of Li2CO3, around 72 ± 5 mol % of SiO2, about 20 ± 3 mol % of Sb2O3, and 8 ± 2 mol % of Bi2O3.

Career Highlights

Moritaka Shoji is associated with Hitachi, Ltd., a leading technology and engineering company in Japan. His role in this esteemed organization has facilitated the advancement of electrical components, especially in improving nonlinear resistors.

Collaborations

Throughout his career, Moritaka has collaborated with notable colleagues such as Takeo Yamazaki and Satoru Ogihara. Their partnerships have enabled a dynamic exchange of ideas and have driven further innovations within their field.

Conclusion

In conclusion, Moritaka Shoji is an influential inventor whose work on nonlinear resistors has the potential to foster advancements in electronic engineering. His ongoing contributions at Hitachi, Ltd. and collaborations with fellow inventors continue to make a significant impact in technology and innovation.