Tohru Yanagisawa

Title: Tohru Yanagisawa: Innovator in Crystal Oscillator Technology

Introduction

Tohru Yanagisawa, a prominent inventor based in Kodaira, Japan, has made significant contributions to the field of electronics, particularly in the development of advanced crystal oscillators. With a total of eight patents to his name, Yanagisawa continues to push the boundaries of innovation in sensor and oscillator technology.

Latest Patents

Among his latest inventions, Yanagisawa has developed a method for manufacturing a crystal oscillator. This invention is particularly focused on achieving precise fine adjustments without applying unnecessary external force to the oscillator. The method includes several steps: a first etching stage to create a prescribed external shape, an electrode forming step for developing an electrode on the surface, a leakage amount measuring stage to assess vibrations, and a second etching step to adjust the external shape based on measured leakage, enhancing overall balance.

Additionally, Yanagisawa has innovated a physical quantity sensor that comprises a driving circuit, a sensor element, and an amplifier circuit. This design optimizes the performance by ensuring that the driving signal remains stable and that the amplifier reacts in a way to keep output variations minimal, thereby maintaining consistent sensitivity in the sensor output.

Career Highlights

Throughout his career, Tohru Yanagisawa has worked with reputable companies such as Citizen Watch Company, Ltd. and Citizen Holdings Company, Ltd. His experience at these organizations provided him the platform to advance his research and develop innovative technologies that benefit various sectors in electronics and sensor applications.

Collaborations

Yanagisawa has collaborated with talented individuals such as Izumi Yamamoto and Yoichi Nagata. These partnerships have fostered an environment of creativity and collective advancement in their projects, enabling them to tackle complex challenges in their field together.

Conclusion

Tohru Yanagisawa stands out as a key figure in the realm of crystal oscillator and sensor technology. Through his innovative patents and collaborative efforts, he continues to make strides that will shape the future of electronic devices. His work not only paves the way for more precise manufacturing techniques but also enhances the functionality of sensors that are integral to various applications.