This inventor holds 9 USPTO granted patents. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Denki K.k., Toshin Denki Kabushiki Kaisha. Active years: 1982-2005.
Location History:
- Fukuyama, JP (1982 - 1993)
- Hiroshima, JP (1990 - 1995)
- Tokyo, JP (2005)
Company Filing History:
8 out of 21,351 
1 out of 488 
1 out of 1 Years Active: 1982-2005
Title: The Innovative Contributions of Setsuo Hosogai
Introduction
Setsuo Hosogai is a notable inventor based in Hiroshima, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of safety devices for electrical systems. With a total of 9 patents to his name, Hosogai's work has had a lasting impact on the industry.
Latest Patents
One of Hosogai's latest patents is the Earth Leakage Breaker. This invention prevents the malfunction of an earth leakage breaker due to a lightning surge. It also ensures that when a lightning arrester is short-circuited and damaged by a high-level lightning surge, a power supply short circuit is prevented. The design includes a contact overcurrent detector section and a zero phase current transformer arranged from the power supply side to the load side, with a lightning arrester connected between the overcurrent detector section and the zero phase current transformer.
Another significant patent is the Circuit Breaker. This circuit breaker features a casing with a base and a main cover secured to the base, accommodating a circuit breaking mechanism. A recess is formed in one surface of the main cover, designed to receive an auxiliary device of the circuit breaking mechanism. An auxiliary cover is mounted on the main cover to close the recess. The circuit breaker is automatically tripped when the auxiliary cover is opened, allowing for the secure installation of the auxiliary device.
Career Highlights
Throughout his career, Setsuo Hosogai has worked with prominent companies such as Mitsubishi Electric Corporation and Mitsubishi Denki K.K. His experience in these organizations has contributed to his expertise in electrical safety devices and innovations.
Collaborations
Hosogai has collaborated with notable colleagues, including Hiroshi Fujii and Kouhei Fujiwara. Their teamwork has fostered an environment of innovation and creativity in their projects.
Conclusion
Setsuo Hosogai's contributions to electrical engineering through his patents and collaborations highlight his importance as an inventor. His work continues to influence the safety and efficiency of electrical systems today.