Tokyo, Japan

Takeshi Hirai

This inventor holds 16 USPTO granted patents and 4 published patent applications and 3 EPO patents. Top assignees: Agc Inc., Asahi Glass Company, Limited, Kabushiki Kaisha Sega Enterprises. Active years: 2009-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Hirai. Retrieved from https://idiyas.com/inventor/takeshi-hirai

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

USPTO Granted Patents = 16 

% Patents Active = 93.8

 

Average Co-Inventor Count = 2.4

ph-index = 1

Forward Citations = 6(Granted Patents)


Location History:

  • Chiyoda-ku, JP (2022)
  • Tokyo, JP (2009 - 2024)

Company Filing History:


Years Active: 2009-2025

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16 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Takeshi Hirai in Polymer Science

Introduction

Takeshi Hirai, an accomplished inventor based in Tokyo, Japan, has made significant strides in the field of polymer science. With an impressive portfolio of 14 patents, his work has primarily focused on advancements in polymer electrolyte membranes and their applications in water electrolyzers.

Latest Patents

Takeshi Hirai's latest patents include innovations such as the polymer electrolyte membrane, membrane electrode assembly, and polymer electrolyte water electrolyzer. These inventions provide a polymer electrolyte membrane that can be applied to a polymer electrolyte water electrolyzer, characterized by its capability to produce a low electrolytic voltage while excelling in hydrogen gas recovery efficiency. The polymer electrolyte membrane contains a polymer electrolyte with a hydrogen gas permeation coefficient that meets stringent specifications under specific temperature and humidity conditions. Additionally, he has developed methods for producing fluorosulfonyl group-containing compounds and monomers that are critical in various applications.

Career Highlights

Throughout his career, Takeshi has had the opportunity to work with notable companies such as AGC Inc. and Kabushiki Kaisha Sega Enterprises. His contributions have not only advanced the technological landscape but have also provided innovative solutions in the field of energy production and polymer materials.

Collaborations

Takeshi Hirai's work has not been a solo endeavor. He has collaborated with esteemed colleagues such as Daisuke Jomuta and Chikaya Tamitsuji, whose joint efforts have further propelled the advancements in polymer research and development.

Conclusion

In conclusion, Takeshi Hirai stands out as a pivotal figure in the innovation of polymer electrolyte technologies. His relentless pursuit of excellence and collaboration has led to significant advancements, paving the way for future developments in energy-efficient solutions. His contributions are a prime example of how dedicated inventors can impact the industry positively.

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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