This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignees: Mitsubishi Electric Corporation, Nunome Electric Co., Ltd.. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 16,627 
1 out of 1 Years Active: 2026
Title: Yoshiaki Yamamoto: Inventor of an Efficient Coil Device
Introduction
Yoshiaki Yamamoto is an inventor associated with Tokyo, Japan. His work includes a patented coil and power-conversion technology designed to combine compact construction with efficient operation and improved heat dissipation.
Latest Patents
Yamamoto is credited with 1 patent. His patent, “Coil Device and Power Conversion Device,” describes a transformer with a core group and a winding group. Multiple winding layers pass through closed magnetic circuits formed by multiple cores. The cores are spaced along the conductors carrying current, while the winding layers are arranged side by side from the inside outward in a direction that intersects the current flow. This arrangement is intended to provide a compact, cost-effective coil device with good heat dissipation and high efficiency.
Career Highlights
Yamamoto has been associated with Mitsubishi Electric Corporation and Nunome Electric Co., Ltd. His patented work addresses transformer design and power conversion.
Collaborations
Yamamoto’s listed coworkers include Takashi Kumagai and Kazuaki Fukui.
Conclusion
Yoshiaki Yamamoto’s patent presents a transformer configuration intended to improve heat management, efficiency, size, and cost, reflecting his contributions to coil-device and power-conversion technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile