Iwao Ohshima is a notable inventor based in Kanagawa-ken, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of vacuum switch technology. With a total of 6 patents to his name, Ohshima's work has had a lasting impact on the industry.

Latest Patents

One of Ohshima's latest patents is focused on a vacuum interrupter and vacuum switch that utilizes a specific alloy for its contacts. The alloy, referred to as {W—Cu Sb-balance Cu} alloy, incorporates tungsten (W) or tungsten-molybdenum (WMo) as an anti-arcing constituent. This alloy is designed to enhance the performance of vacuum switches by reducing arcing at contact surfaces, thereby improving contact resistance characteristics. The innovative design aims to minimize damage due to melting and dispersion at the contact surfaces, ultimately preventing restriking.

Career Highlights

Iwao Ohshima has spent a significant portion of his career at Kabushiki Kaisha Toshiba, where he has been instrumental in advancing vacuum switch technology. His expertise and innovative approach have led to the development of several key patents that address critical challenges in electrical engineering.

Collaborations

Ohshima has collaborated with notable colleagues, including Tsutomu Okutomi and Mitsutaka Homma. These partnerships have fostered a collaborative environment that encourages innovation and the sharing of ideas.

Conclusion

Iwao Ohshima's contributions to vacuum switch technology exemplify the importance of innovation in electrical engineering. His patents not only enhance the performance of electrical devices but also pave the way for future advancements in the field.

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