Tokyo, Japan

Kazunari Yoshida

This inventor holds 4 USPTO granted patents and 5 published patent applications and 1 EPO patent. Top assignees: Nippon Steel Chemical & Material Co., Ltd., Nippon Steel Chemical & Material Co., Ltd.. Active years: 2025-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazunari Yoshida. Retrieved from https://idiyas.com/inventor/kazunari-yoshida-983ffa0m

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

USPTO Granted Patents = 4 

% Patents Active = 50.0

 

Average Co-Inventor Count = 4.3

ph-index = 1


Company Filing History:


Years Active: 2025-2026

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4 patents (USPTO):Explore Patents

Title: Kazunari Yoshida: Innovator in Organic Electroluminescent Technology

Introduction

Kazunari Yoshida is a prominent inventor based in Tokyo, Japan. He is known for his significant contributions to the field of organic electroluminescent devices. His innovative work has led to advancements in display technology, making it more efficient and stable.

Latest Patents

Kazunari Yoshida holds a patent for an organic electroluminescent element. This patent describes an organic EL device that includes a light-emitting layer situated between an anode and a cathode. The light-emitting layer contains a first host, a second host, and a luminescent dopant. Specifically, an indolocarbazole compound is used as the first host, while a biscarbazole compound or a dibenzofuran compound is utilized as the second host. This design results in an organic EL device that boasts a low drive voltage, high efficiency, and remarkable drive stability. He has 1 patent to his name.

Career Highlights

Kazunari Yoshida is currently employed at Nippon Steel Chemical & Material Co., Ltd. His work at this esteemed company has allowed him to focus on developing cutting-edge technologies in the field of organic electronics. His expertise and innovative mindset have made him a valuable asset to his team.

Collaborations

Kazunari has collaborated with notable coworkers, including Junya Ogawa and Yuji Ikenaga. Their combined efforts have contributed to the advancement of organic electroluminescent technology.

Conclusion

Kazunari Yoshida's contributions to the field of organic electroluminescent devices highlight his innovative spirit and dedication to advancing technology. His work continues to influence the development of efficient and stable display 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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