Location History:
- Kakogawa, JP (1984)
- Kawasaki, JP (1987)
Company Filing History:
2 out of 902 
2 out of 39,245 
1 out of 25 Years Active: 1984-1987
Title: The Innovations of Masaharu Atsumi: A Pioneer in Thyristor Technology
Introduction
Masaharu Atsumi, an accomplished inventor based in Kakogawa, Japan, has made significant contributions to the field of electronics through his innovative designs and patents. With a total of three patents to his name, Atsumi has established himself as a forward-thinking engineer dedicated to advancing technology.
Latest Patents
Among his latest inventions is a novel thyristor with an 'on' protective circuit and Darlington output stage. This invention presents a unique approach to fabricating a thyristor as a single device within an integrated circuit framework. Notably, this thyristor can remain in a conductive state even when the current flowing through the anode and cathode is interrupted, provided the current is restored within a specified duration. The construction involves a combination of transistors and a resistor, designed to enhance the efficiency and reliability of this crucial electronic component.
Another notable patent from Atsumi is the one-terminal type level control circuit, featuring a constant-current source transistor that correlates with the power source voltage of a sensor. This innovation is designed to safeguard input circuitry, such as microprocessors, by preventing excessive signal levels that could cause damage. The circuit employs smart configurations of transistors to effectively manage current flow based on incoming signal levels.
Career Highlights
Atsumi has had a fruitful career, working for renowned companies such as Fujitsu Ten Limited and Fujitsu Corporation. His tenure at these organizations has enabled him to hone his expertise and contribute to various technological advancements in the electronic sector.
Collaborations
Throughout his professional journey, Masaharu Atsumi has collaborated with notable colleagues, including Satoru Kishimoto and Yoshiaki Sano. Together, they have engaged in research and development that continues to impact the field of electronics positively.
Conclusion
Masaharu Atsumi’s work epitomizes innovation in the realm of electronic components. With his patented inventions, he has not only advanced the performance of thyristors but also improved the safety of electronic circuits. As technology continues to evolve, Atsumi’s contributions will undoubtedly play a pivotal role in shaping the future of the industry.