Shizuoka, Japan

Yukiharu Hosoi

This inventor holds 6 USPTO granted patents and 1 EPO patent. Top assignee: Yamaha Hatsudoki Kabushiki Kaisha. Active years: 1984-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yukiharu Hosoi. Retrieved from https://idiyas.com/inventor/yukiharu-hosoi

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


% Patents Active = 83.3


Average Co-Inventor Count = 1.8

ph-index = 4

Forward Citations = 191(Granted Patents)


Location History:

  • Shizuoka, JP (1984 - 1987)
  • Shizuoka-ken, JP (2007 - 2011)

Company Filing History:


Years Active: 1984-2011

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6 patents (USPTO):Explore Patents

Title: Innovations of Yukiharu Hosoi

Introduction

Yukiharu Hosoi is a prominent inventor based in Shizuoka-ken, Japan. He has made significant contributions to the field of power supply systems, particularly for vehicles. With a total of 6 patents to his name, his work focuses on enhancing the efficiency and safety of high-voltage power supply devices.

Latest Patents

Hosoi's latest patents include a "Power supply device for a vehicle" and a "Power supply for a vehicle." The power supply device features a high voltage system with multiple battery modules connected in series. This design incorporates a safety plug unit that connects and disconnects the electrode terminals of the battery modules, ensuring safety during use and maintenance. The output voltage of each battery module is limited to below 50V, reducing the risk of injury and allowing for a more compact device. His power supply system aims to provide high-voltage power to vehicle drive motors while minimizing size, weight, and cost. By utilizing a three-level inverter, the system converts direct-current electric power into three-phase alternating-current electric power, enhancing performance and reducing the required withstand-voltage performance of connected control units.

Career Highlights

Yukiharu Hosoi is currently employed at Yamaha Hatsudoki Kabushiki Kaisha, where he continues to innovate in the field of power supply technology. His work has been instrumental in advancing the capabilities of electric vehicles and improving their overall efficiency.

Collaborations

Some of his notable coworkers include Takaie Matsumoto and Shigeto Suzuki, who contribute to the collaborative efforts in developing cutting-edge technologies at Yamaha.

Conclusion

Yukiharu Hosoi's contributions to power supply innovations for vehicles demonstrate his commitment to enhancing safety and efficiency in the automotive industry. His patents reflect a deep understanding of electrical engineering and a dedication to advancing technology.

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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