Company Filing History:
2 out of 126 
1 out of 13,402 
Years Active: 1990-1991
Title: Fumio Hagi: Innovator in Alcohol Detection and Automotive Climate Control
Introduction
Fumio Hagi is a notable inventor based in Tokyo, Japan. He has made significant contributions to the fields of alcohol detection and automotive climate control. With a total of 2 patents, Hagi's work reflects his innovative spirit and technical expertise.
Latest Patents
Hagi's latest patents include an alcohol concentration detecting device and a mode switching arrangement for automotive air conditioners. The alcohol concentration detecting device features a capacitance-type alcohol sensor that can be submerged in alcohol-mixed fuel. This device issues an output signal that varies according to the alcohol concentration in the fuel. It includes a first oscillating circuit that generates a variable pulse signal based on the sensor's output and a second oscillating circuit that provides a reference pulse signal. The alcohol concentration detecting circuit then compares these signals to issue a representation of the alcohol concentration.
The mode switching arrangement for automotive air conditioners is designed to respond to external air temperature. If the automatic mode is interrupted and manual control is initiated, the system defaults to defrost or defrost/foot modes when the external temperature is low. Conversely, if the temperature is high, the system defaults to the vent mode.
Career Highlights
Throughout his career, Hagi has worked with prominent companies such as Calsonic Corporation and Nissan Motor Company Limited. His experience in these organizations has allowed him to develop and refine his innovative ideas.
Collaborations
Hagi has collaborated with notable coworkers, including Masahiro Honma and Yukihiro Niide. Their combined expertise has contributed to the success of various projects and innovations.
Conclusion
Fumio Hagi is a distinguished inventor whose work in alcohol detection and automotive climate control showcases his innovative capabilities. His contributions have the potential to impact both safety and comfort in automotive applications.