Mikio Nakajima

Title: Mikio Nakajima: Innovator in Ceramic Oscillator Technology

Introduction

Mikio Nakajima is a prominent inventor based in Toyama, Japan. He has made significant contributions to the field of ceramic oscillator technology, holding a total of 4 patents. His innovative approaches have paved the way for advancements in manufacturing methods and polarization techniques.

Latest Patents

One of Nakajima's latest patents is a manufacturing method for a ceramic oscillator. This method allows for the control of oscillation frequency with high accuracy. The process involves polarizing a mother substrate, forming electrodes in discrete ceramic oscillator units, cutting the substrate into these units, and applying an outer package to each oscillator, resulting in a finished product. The polarization processing is executed by applying a high DC voltage while measuring the antiresonant frequency of the mother substrate, ensuring it reaches a target value during polarization.

Another notable patent is the polarization method of a multi-layered piezoelectric body. This method involves laminating multiple piezoelectric layers and internal electrodes, with adjacent layers polarized in opposite directions. The process includes a first polarization step applying an electric field in one direction and a secondary polarization step that reverses the polarization direction of one layer while maintaining the overall polarization degree.

Career Highlights

Mikio Nakajima is currently employed at Murata Manufacturing Co., Ltd., a leading company in electronic components. His work has significantly impacted the development of high-precision ceramic oscillators, enhancing their performance and reliability in various applications.

Collaborations

Nakajima has collaborated with notable colleagues, including Naoki Fujii and Kenichi Kotani. Their combined expertise has contributed to the advancement of ceramic technology and innovation in the industry.

Conclusion

Mikio Nakajima's contributions to ceramic oscillator technology exemplify his innovative spirit and dedication to advancing the field. His patents reflect a commitment to precision and quality in manufacturing methods, making him a key figure in the industry.