Tokyo, Japan

Takashi Tsutsumi

This inventor holds 34 USPTO granted patents and 7 published patent applications and 3 EPO patents, primarily in Fuel Cell Technology. Top assignees: Fuji Electric Fa Components & Systems Co., Ltd., Fuji Electric Co., Ltd., Zeon Corporation. Active years: 1986-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Tsutsumi. Retrieved from https://idiyas.com/inventor/takashi-tsutsumi

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

USPTO Granted Patents = 34 

% Patents Active = 70.6

 

Average Co-Inventor Count = 3.2

ph-index = 5

Forward Citations = 96(Granted Patents)


Location History:

  • Tsukuba, JP (2018)
  • Kounosu, JP (2017 - 2019)
  • Matsumoto, JP (2018 - 2019)
  • Kouosu, JP (2019)
  • Tokyo, JP (1986 - 2023)

Company Filing History:


Years Active: 1986-2026

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Areas of Expertise:
Fuel Cell Array
Negative Photosensitive Resin
Semiconductor Device
Silicon Carbide
Electromagnetic Contactor
Leak Detection
Resin Composition
Distance Measuring Equipment
Magnetic Contactor
Surge Suppression
Operation Coil Drive
Rail Attachment
34 patents (USPTO):Explore Patents

Title: The Innovative Journey of Takashi Tsutsumi

Introduction

Takashi Tsutsumi, a prolific inventor based in Tokyo, Japan, has made significant contributions to the field of fuel battery technology and other electrical systems. With a remarkable portfolio of 30 patents, his inventive journey showcases his dedication to enhancing the reliability and efficiency of energy systems.

Latest Patents

Among his recent innovations, Takashi has developed a cutting-edge fuel battery cell and a corresponding fuel battery system. The system aims to improve reliability by accurately detecting leaks in either the fuel electrode gas or the air electrode gas. His fuel battery cell design incorporates a layered structure consisting of a first electrode, an electrolyte membrane, and a second electrode, all supported by a substrate. A key feature of this invention is the insulation element that separates different regions without obstructing the substrate's openings.

Another notable invention is an operation coil drive device for magnetic contactors. This device enhances control over semiconductor switching elements by optimizing the ON/OFF time ratios for different operational states. It includes components for calculating inductance and resistance values, allowing for precise adjustments during circuit-closing processes.

Career Highlights

Takashi Tsutsumi has built his career at esteemed companies, including Fuji Electric Fa Components & Systems Co., Ltd. and Fuji Electric Co., Ltd. His work has consistently focused on advancing technology in energy systems, showcasing innovative solutions that address common challenges in the industry.

Collaborations

Throughout his career, Takashi has collaborated with notable professionals such as Masaaki Watanabe and Hideki Daijima. Together, they have driven significant advancements in their respective fields, contributing to an innovative environment within their organizations.

Conclusion

Takashi Tsutsumi's achievements represent a remarkable blend of creativity and technical expertise. With 30 patents spanning fuel battery technology and electrical systems, his work continues to impact the energy sector positively. His dedication to innovation and collaboration stands as a testament to his influential role in shaping the future of energy technologies.

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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