Hyogo, Japan

Takuji Hatakeyama

This inventor holds 29 USPTO granted patents and 18 published patent applications and 6 EPO patents, primarily in Organic Electroluminescence. Top assignees: Kwansei Gakuin Educational Foundation, Sk Materials Jnc Co., Ltd., Jnc Corporation. Active years: 2012-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takuji Hatakeyama. Retrieved from https://idiyas.com/inventor/takuji-hatakeyama

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

USPTO Granted Patents = 29 

% Patents Active = 93.1

 

Average Co-Inventor Count = 3.9

ph-index = 5

Forward Citations = 135(Granted Patents)


Location History:

  • Uji, JP (2012 - 2017)
  • Hyogo, JP (2019 - 2023)
  • Sanda, JP (2022 - 2024)

Company Filing History:


Years Active: 2012-2026

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Areas of Expertise:
Organic Electroluminescent Element
Polycyclic Aromatic Compound
Display Device
Lighting Device
Organic Device
Light Emission Layer
Composition
Catalyst
Cross-Coupling Reaction
Organic Electroluminescence
Organic Light Emitting Element
29 patents (USPTO):Explore Patents

Title: Takuji Hatakeyama: Innovator in Organic Electroluminescence

Introduction

Takuji Hatakeyama, a prominent inventor based in Hyogo, Japan, holds an impressive portfolio of 27 patents in the field of organic electroluminescent devices. His contributions significantly enhance display and lighting technology, showcasing his expertise and innovative spirit within the industry.

Latest Patents

Among his latest patents, Hatakeyama has developed groundbreaking solutions such as an organic electroluminescent element and display device. This invention features a light-emitting layer that includes a host compound with boron and oxygen, along with a thermally assisting delayed fluorescent material to achieve high light emission efficiency. Another patent focuses on an organic light-emitting device containing specific compounds that also promise improved light emission efficiency.

Career Highlights

Takuji’s career has been marked by significant associations with esteemed organizations. He has worked with the Kwansei Gakuin Educational Foundation and Sk Materials Inc. Co., Ltd., contributing to groundbreaking research and development in their respective fields.

Collaborations

Throughout his journey, Hatakeyama has collaborated with notable individuals like Motoki Yanai and Yuko Yamaga. These collaborations have facilitated the exchange of ideas, fostering innovation and advancing technology in organic electroluminescence.

Conclusion

Takuji Hatakeyama's innovative contributions to the field of organic electroluminescence highlight his role as a leading inventor. His varied patents not only demonstrate his technical prowess but also have the potential to reshape the landscape of displays and lighting devices in the future.

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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