Location History:
- Tokyo, JP (1987 - 1999)
- Yokohama, JP (1997 - 2004)
- Kanagawa, JP (1989 - 2020)
Company Filing History:
21 out of 58,130 
2 out of 3,870 
2 out of 4 
Years Active: 1987-2025
Title: Norio Shoji: Innovator in Amplification Technology
Introduction
Norio Shoji is a prominent inventor based in Kanagawa, Japan, known for his significant contributions to amplification technology. With an impressive portfolio of 24 patents, Shoji has made substantial advancements in electronic circuits that enhance the performance and efficiency of amplifiers.
Latest Patents
Among his latest patents, Shoji developed innovative designs for amplifiers and electronic circuits. One of his notable inventions is an amplifier that uses a transistor to lower the minimum operation voltage. This design integrates a P-type and an N-type transistor connected in series along with an operational amplifier. The unique configuration allows for improved functionality by connecting the output terminal of the operational amplifier to the gates of both transistors, while ensuring one of the input terminals connects to their drains. Furthermore, a predetermined reference voltage is applied to the other input, optimizing the amplifier's performance.
Another important patent involves a bias-voltage supply circuit for radio-frequency amplification. This circuit design incorporates a constant-voltage power supply that generates voltage higher than the bias voltage, accompanied by a rectifier transistor and a constant-current power supply. The arrangement of the rectifier transistor ensures that the descent of the electric potential of the input terminal does not occur, which leads to enhanced saturation characteristics in the radio-frequency amplification circuit.
Career Highlights
Shoji has garnered recognition for his work at notable companies, particularly Sony Corporation and Nitto Denko Corporation. His experiences at these organizations have shaped his expertise and contributed to the development of his innovative technologies.
Collaborations
Throughout his career, Shoji has collaborated with esteemed professionals in the industry, including Kimimasa Senba and Keiji Narusawa. These collaborations have allowed him to combine their expertise to drive forward-thinking ideas and develop groundbreaking technologies.
Conclusion
Norio Shoji exemplifies a dedicated inventor whose work has significantly impacted the field of amplification technology. Through his 24 patents and collaborations with industry leaders, he continues to push the boundaries of innovation, enhancing electronic circuits for better performance and efficiency.