Yoshimi Ishii

Title: **Yoshimi Ishii: Innovator in Acoustic Wave Devices**

Introduction

Yoshimi Ishii is a notable inventor based in Sendai, Japan, recognized for his contributions to the field of acoustic wave devices. With two patents to his name, Ishii has been instrumental in advancing technology that utilizes acoustic waves for various applications.

Latest Patents

Ishii's latest innovations focus on the development of acoustic wave devices and methods related to their fabrication. One of his patents discloses an acoustic wave device that includes a quartz substrate and a piezoelectric plate made from LiTaO3 or LiNbO3. This device is designed to support surface acoustic waves, featuring a configuration where the second surface of the piezoelectric plate is a minus surface influenced by its crystal structure orientation. It also includes an interdigital transducer electrode that provides transducer functionality related to the surface acoustic wave.

Another significant patent involves methods and assemblies for fabricating acoustic wave devices. This process includes attaching the first surface of a piezoelectric layer to a handling substrate and performing a thinning operation to reveal a reduced-thickness piezoelectric layer. The method further elaborates on bonding this layer to a permanent substrate, typically made of quartz, while removing the handling substrate afterward.

Career Highlights

Yoshimi Ishii is currently employed at Skyworks Solutions, Inc., where he applies his expertise to innovate and refine acoustic wave technologies. His work at Skyworks has positioned him as a key player in the acoustic wave device sector.

Collaborations

Throughout his career, Ishii has collaborated with esteemed colleagues such as Michio Kadota and Shuji Tanaka. These partnerships have likely contributed to the progress and success of his inventions, fostering a collaborative environment conducive to innovation.

Conclusion

Yoshimi Ishii's contributions to the field of acoustic wave devices exemplify the vital role inventors play in advancing technology. With his impressive portfolio of patents and collaborations, he continues to make significant strides in the field, paving the way for future innovations.