Yuhji Umeda

Title: Inventor Spotlight: Yuhji Umeda

Introduction

Yuhji Umeda is an innovative inventor based in Iwakura, Japan, known for his contributions to the field of materials science and engineering. With a total of two patents to his name, Umeda has advanced the understanding and practical applications of piezoelectric and electrostrictive elements, as well as low-temperature fireable ceramic substrates.

Latest Patents

Umeda's patents include groundbreaking technologies that serve unique purposes. His latest inventions are:

1. **Piezoelectric/Electrostrictive Element:** This innovation features a piezoelectric/electrostrictive layer that can be utilized as a sensor, even when cracks appear in the piezoelectric layer. The element consists of a substrate, a lower electrode layer secured onto the substrate, and a piezoelectric/electrostrictive layer attached to the lower electrode layer. Notably, the coverage area of the lower electrode layer relative to the substrate is 98% or less, enhancing its utility and reliability.

2. **Multilayered Ceramic Substrate Fireable in Low Temperature:** This invention focuses on a multilayered ceramic substrate that can withstand low-fire temperatures while maintaining structural integrity. The design includes an intermediate layer comprising a ceramic component between a ceramic substrate and a brazed metal member. It ensures a relationship between thermal coefficients that maintains reliable adhesion strength and performance while leveraging the advantages of low-temperature processes.

Career Highlights

Yuhji Umeda is affiliated with NGK Insulators, Inc., where he continues to focus on innovation in materials that aim to enhance the performance and durability of electronic components. His work emphasizes the practical implementation of his patented technologies in everyday applications, making significant strides in the industry.

Collaborations

Throughout his career, Umeda has collaborated with esteemed colleagues such as Tadashi Otagiri and Go Suzuki. These partnerships highlight the collaborative spirit within the field, allowing for the exchange of ideas and expertise that further technological advancements.

Conclusion

Yuhji Umeda stands out as a dedicated inventor whose contributions to material science are poised to impact various applications. His patents not only demonstrate his ingenuity but also reflect a commitment to developing robust and reliable technological solutions in the modern era. As he continues his work with NGK Insulators, Umeda's future innovations are eagerly anticipated by those in his field.