Tetsuo Shirai

Title: Tetsuo Shirai - Innovator in Liquid Level Measurement Technology

Introduction

Tetsuo Shirai is a notable inventor based in Sapporo, Japan. He has made significant contributions to the field of liquid level measurement, particularly in the context of extremely low temperature-liquefied gases. His innovative approach has led to advancements that enhance the accuracy and efficiency of liquid level indicators.

Latest Patents

Tetsuo Shirai holds a patent for a liquid level indicator designed for extremely low temperature-liquefied gases. This invention involves a superconductor wire immersed in the liquefied gas, where a current is passed through it. The voltage across the terminals of the superconductor wire is measured to gauge the liquid level of the gas. The improvement in this design includes a current supply portion that first increases the current to the plateau region of the current-voltage hysteresis curve and then decreases it to a return-path rectilinear region. This method allows for precise measurement of liquid levels, such as helium, from the normal-pressure state to the superfluid state.

Career Highlights

Tetsuo Shirai is associated with Hoxan Co., Ltd., where he continues to develop and refine his innovative technologies. His work has garnered attention for its practical applications in various industries that require precise liquid level measurements.

Collaborations

Throughout his career, Tetsuo Shirai has collaborated with esteemed colleagues, including Yasuo Kuraoka and Atsushi Kurosawa. These partnerships have contributed to the advancement of technology in their respective fields.

Conclusion

Tetsuo Shirai's contributions to liquid level measurement technology exemplify the impact of innovation in scientific research and industrial applications. His patent for a liquid level indicator showcases his expertise and commitment to advancing technology in challenging environments.