Company Filing History:
Years Active: 1992-1996
Title: Innovations by Shigetoshi Ouchi, a Leading Inventor from Hitachi, Japan
Introduction
Shigetoshi Ouchi is a notable inventor based in Hitachi, Japan, recognized for his contributions to the field of electrical engineering. With a total of four patents to his name, Ouchi has significantly advanced technologies related to DC power supply systems and circuit protection.
Latest Patents
Among his latest patents is a ground-breaking design for a DC power supply circuit. This circuit effectively connects multiple DC circuit breakers to a semiconductor converter, facilitating a seamless integration of power with minimal resistance loss. A key feature includes a larger capacity DC circuit breaker in the return circuit that activates in response to short circuit conditions, thereby enhancing the safety and efficiency of the system.
Another notable patent is the development of a commutation type DC breaker. This innovative device integrates a commutation circuit that operates in parallel with the main contact, serving to protect the load from unwanted current flows during operation. The use of a series circuit comprising a commutation capacitor, reactor, and switch reinforces safety while maintaining high performance in various electrical applications.
Career Highlights
Shigetoshi Ouchi's professional journey has been marked by his role at Hitachi, Ltd., where he has played a pivotal role in pushing the boundaries of innovation in electrical systems. His research and inventions have contributed substantially to the company's advancements in power supply technology.
Collaborations
Throughout his career, Ouchi has collaborated with esteemed colleagues such as Haruo Honda and Toru Yoshida. Together, they have explored new frontiers in electrical engineering, yielding innovative solutions that enhance the reliability and functionality of DC power systems.
Conclusion
Shigetoshi Ouchi stands out as a prominent figure in the realm of DC power technology, with a robust portfolio of patents that showcase his inventive spirit. His contributions not only benefit Hitachi but also pave the way for future innovations in electrical engineering, affirming his status as a leading inventor in the industry.