Tokyo, Japan

Yuji Maekawa

This inventor holds 15 USPTO granted patents and 1 published patent application and 7 EPO patents. Top assignees: Ihi Corporation, Mitsubishi Heavy Industries Limited. Active years: 2016-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yuji Maekawa. Retrieved from https://idiyas.com/inventor/yuji-maekawa

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

USPTO Granted Patents = 15 

% Patents Active = 100.0

 

Average Co-Inventor Count = 1.5

ph-index = 4

Forward Citations = 41(Granted Patents)


Company Filing History:


Years Active: 2016-2025

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15 patents (USPTO):Explore Patents

Title: **Innovator Spotlight: Yuji Maekawa**

Introduction

Yuji Maekawa, based in Tokyo, Japan, is a distinguished inventor with a remarkable portfolio of 15 patents. His work primarily focuses on advancing technologies in electrical power conversion and wireless power transmission. Maekawa’s inventions are notable not just for their technical innovation but also for their practical applications in modern technology, especially in the context of electric vehicles and power systems.

Latest Patents

Among his latest inventions is a groundbreaking **Bidirectional DC-DC Converter**. This device is engineered to manage varying DC voltage levels efficiently, particularly pertinent to electric vehicles. The converter comprises a first circuit with electronic components designed to process a DC voltage, alongside a second circuit that handles the voltage supplied or generated from the vehicle. Through advanced control mechanisms, it can effectively switch between these voltage levels, thereby enhancing the vehicle's energy management capabilities.

Another significant patent by Maekawa details a **Method for Manufacturing Wireless Power-Transmitting Devices**. This method outlines the creation of a power transmitter and receiver system utilizing specially processed electrically-conductive materials to optimize eddy current states. By manipulating these eddy currents, the method allows for finer adjustments in inductance, which is crucial for achieving efficient wireless power transmission.

Career Highlights

Maekawa has garnered extensive experience throughout his career, having worked for prominent companies such as **IHI Corporation** and **Mitsubishi Heavy Industries Limited**. His roles in these organizations have played an integral part in shaping his innovative mindset and technical expertise.

Collaborations

Throughout his career, Yuji Maekawa has had the opportunity to collaborate with talented individuals, including **Yuji Takatsu** and **Takahiko Murayama**. These collaborations have contributed to the development of innovative technologies that address current demands in the energy sector.

Conclusion

Yuji Maekawa continues to exemplify the spirit of innovation through his dedicated work in the field of electrical engineering. With his impressive patent portfolio and his contributions to the technological landscape in Japan, he remains a significant figure in advancing modern power systems and applications. His inventions not only push the boundaries of what is possible but also pave the way for more sustainable and efficient energy solutions.

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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