Hachioji, Japan

Kiyofumi Otobe

This inventor holds 3 USPTO granted patents. Top assignee: Kabushiki Kaisha Toshiba. Active years: 1992-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyofumi Otobe. Retrieved from https://idiyas.com/inventor/kiyofumi-otobe

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile


% Patents Active = 100.0

Average Co-Inventor Count = 5.9

ph-index = 3

Forward Citations = 12(Granted Patents)


Location History:

  • Hachioji, JP (1992 - 1993)
  • Tokyo, JP (1994)

Company Filing History:


Years Active: 1992-1994

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3 patents (USPTO):Explore Patents

Title: Kiyofumi Otobe: Innovator in Vacuum Circuit Breaker Technology

Introduction

Kiyofumi Otobe is a notable inventor based in Hachioji, Japan. He has made significant contributions to the field of electrical engineering, particularly in the development of contact materials for vacuum circuit breakers. With a total of 3 patents to his name, Otobe's work has advanced the technology used in electrical systems.

Latest Patents

Otobe's latest patents include innovative materials designed for vacuum circuit breakers. One of his patents focuses on a contact material that comprises a copper component, a chromium component, and a bismuth component. This material features a unique metallographic structure that enhances its performance. The boundary surface between the phases in the alloy composition is designed to be smooth, which optimizes its electrical properties. Another patent details a contact for a vacuum interrupter, which is processed to achieve excellent anti-welding characteristics and voltage withstanding capabilities.

Career Highlights

Kiyofumi Otobe is associated with Kabushiki Kaisha Toshiba, a leading company in the technology sector. His work at Toshiba has allowed him to collaborate with other talented engineers and researchers, furthering the development of innovative electrical solutions.

Collaborations

Otobe has worked alongside notable colleagues such as Tsuneyo Seki and Tsutomu Okutomi. Their combined expertise has contributed to the successful development of advanced technologies in the field.

Conclusion

Kiyofumi Otobe's contributions to vacuum circuit breaker technology exemplify the importance of innovation in electrical engineering. His patents reflect a commitment to enhancing the performance and reliability of electrical systems.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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