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For the Inventor, By the Inventor

Tachikawa, Japan

Ryoga Kiguchi

This inventor holds 6 USPTO granted patents and 6 published patent applications. Top assignee: Fuji Electric Co., Ltd.. Active years: 2022-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoga Kiguchi. Retrieved from https://idiyas.com/inventor/ryoga-kiguchi

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

Calculating rank
USPTO Granted Patents = 6 

% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal6 out of 4,826 
 
Fuji Electric Co., Ltd.
 patents

Years Active: 2022-2025

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6 patents (USPTO):Explore Patents
1. 12336094 - Wiring board and power conversion apparatus (2025-06-17),
2. 12334808 - Drive device, drive method, and power conversion device (2025-06-17),
3. 12212224 - Driving apparatus (2025-01-28),
4. 12105156 - Short circuit determination apparatus, switch apparatus, and short circuit determination method (2024-10-01),
5. 11835594 - Short circuit detector and power converter (2023-12-05),
6. 11500015 - Short-circuit determining apparatus, switch apparatus and short-circuit determining method (2022-11-15),

Title: Ryoga Kiguchi: Innovator in Power Conversion Technology

Introduction

Ryoga Kiguchi is a prominent inventor based in Tachikawa, Japan. He has made significant contributions to the field of power conversion technology, holding a total of 6 patents. His innovative designs focus on improving the efficiency and reliability of semiconductor devices.

Latest Patents

Kiguchi's latest patents include a wiring board and a power conversion apparatus. The wiring board features a unique design that incorporates a pair of hard substrates for semiconductor elements connected in parallel, along with a soft substrate that enhances performance. The first and second electrodes are strategically configured to connect the control and reference potential terminals of the semiconductor elements, ensuring optimal functionality.

Another notable patent is a drive device and method that effectively suppresses the deterioration of SiC-MOSFETs. This device allows for seamless switching between two SiC-MOSFETs connected in series, incorporating a dead time to enhance reliability. The drive circuits are designed to maintain appropriate gate voltages during this dead time, ensuring the longevity of the components.

Career Highlights

Ryoga Kiguchi is currently employed at Fuji Electric Co., Ltd., where he continues to develop cutting-edge technologies in power conversion. His work has significantly impacted the efficiency of semiconductor devices, making them more reliable for various applications.

Collaborations

Kiguchi collaborates with talented coworkers, including Hiromu Takubo and Kunio Matsubara. Their combined expertise fosters an environment of innovation and creativity, leading to groundbreaking advancements in their field.

Conclusion

Ryoga Kiguchi is a distinguished inventor whose work in power conversion technology has led to several important patents. His contributions continue to shape the future of semiconductor devices, demonstrating the importance of innovation in this rapidly evolving industry.

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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