George Shimakawa

Title: George Shimakawa: Innovator in Quartz Crystal Oscillator Technology

Introduction

George Shimakawa is a notable inventor based in Nagano, Japan. He has made significant contributions to the field of quartz crystal oscillators, holding a total of 3 patents. His innovative methods have advanced the technology used in various electronic devices.

Latest Patents

Shimakawa's latest patents include a method of making a quartz crystal oscillator and a method of producing housing elements for quartz crystal oscillators. The first patent describes a quartz crystal oscillator package that features a quartz crystal vibrator leaf enclosed in an evacuated housing. The design involves sealing the vibrator leaf frame between two housing elements, which are formed through a precise etching process. This method ensures that the internal volume is sealed under vacuum, resulting in a flat package that boasts small size, high structural strength, an excellent hermetic seal, and high internal vacuum. The second patent mirrors the first, emphasizing the innovative etching techniques and the use of heat and vacuum to create a durable eutectic alloy seal.

Career Highlights

Throughout his career, George Shimakawa has worked with prominent companies such as Kabushiki Kaisha Suwa Seikosha and Matsushima Kogo Kabushiki Kaisha. His experience in these organizations has allowed him to refine his skills and contribute to the advancement of quartz crystal technology.

Collaborations

Shimakawa has collaborated with notable coworkers, including Hiroyuki Fujii and Yukio Hara. Their combined expertise has further propelled innovations in the field of quartz crystal oscillators.

Conclusion

George Shimakawa's contributions to quartz crystal oscillator technology have made a lasting impact on the industry. His innovative patents and collaborations highlight his dedication to advancing electronic technology.