Location History:
- Hamuramachi, JP (1992)
- Hamura, JP (1999)
Company Filing History:
2 out of 17 
1 out of 172 
1 out of 1 Years Active: 1992-1999
Title: Innovations of Hirofumi Yoshihara
Introduction
Hirofumi Yoshihara is a notable inventor based in Hamuramachi, Japan. He has made significant contributions to the field of surge protection devices, holding two patents that showcase his innovative approach to electrical safety.
Latest Patents
Yoshihara's latest patents include a Multi-terminal Surge Protection Device and a Surge Absorption Device. The Multi-terminal Surge Protection Device is designed to absorb surges of either polarity between lines and between a line and ground. This device reduces the difference in operating time between the device elements connected to lines. It employs a plurality of unipolar surge protection device elements that only operate to absorb surges of a specific polarity. The Surge Absorption Device fundamentally consists of a first semiconductor region and a second semiconductor region forming a pn junction. This device is engineered to manage the flow of minority carriers effectively, ensuring optimal performance during surge events.
Career Highlights
Throughout his career, Yoshihara has worked with prominent organizations, including Sankosha Corporation and the Agency of Industrial Science and Technology under the Ministry of International Trade and Industry. His work has significantly impacted the development of surge protection technologies.
Collaborations
Yoshihara has collaborated with notable professionals in his field, including Masaaki Sato and Yutaka Hayashi. Their combined expertise has contributed to advancements in electrical safety devices.
Conclusion
Hirofumi Yoshihara's innovative work in surge protection devices highlights his importance as an inventor in the field of electrical engineering. His patents reflect a commitment to enhancing safety and reliability in electrical systems.