Tsukuba, Japan

Yoshiaki Tsubata

This inventor holds 23 USPTO granted patents and 5 published patent applications and 15 EPO patents, primarily in Organic Light Emitting Devices. Top assignees: Sumitomo Chemical Company, Limited, Sumitomo Chemical Companylimited. Active years: 1996-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshiaki Tsubata. Retrieved from https://idiyas.com/inventor/yoshiaki-tsubata

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

USPTO Granted Patents = 23 

% Patents Active = 69.6

 

Average Co-Inventor Count = 3.5

ph-index = 5

Forward Citations = 80(Granted Patents)


Location History:

  • Ibaraki, JP (1996 - 1999)
  • Tsukuba, JP (1997 - 2022)

Company Filing History:


Years Active: 1996-2022

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Areas of Expertise:
Dendrimer Compound
Organic Luminescent Device
Polymer Compound
Light Emitting Device
Polymeric Fluorescent Substance
Liquid Crystal Mixture
Block Copolymer
Anthracene Polymer
Fluorescent Material
Unsaturated Side Chain
Polymeric Luminiscent Element
23 patents (USPTO):Explore Patents

Title: Innovations and Contributions of Yoshiaki Tsubata in Light Emitting Technologies

Introduction: Yoshiaki Tsubata, a notable inventor based in Tsukuba, Japan, has made significant advancements in the field of light-emitting technologies. With an impressive portfolio of 23 patents, Tsubata’s contributions have enhanced the efficiency and effectiveness of light-emitting devices.

Latest Patents: Tsubata's recent patents showcase his innovative approach to light emission. One of his notable inventions is a composition and light-emitting element device that improves light emission efficiency. This invention includes a unique composition with specific compounds that allow for superior performance in light-emitting devices. Another significant patent introduced by Tsubata is the development of a dendrimer compound alongside an organic luminescent device. This compound features a well-defined core and dendritic structures that contribute to enhancing light emission properties.

Career Highlights: Yoshiaki Tsubata has built a distinguished career at Sumitomo Chemical Company, Limited, where he focuses on research and development in organic materials and light-emitting technologies. His work has not only positioned him as a leading figure in this specialty but has also had a considerable impact on the industry at large.

Collaborations: During his career, Tsubata has collaborated with esteemed colleagues like Shuji Doi and Makoto Kitano. Their collective expertise has contributed to the advancements in light-emitting technologies, further amplifying the innovative work being conducted at Sumitomo Chemical Company.

Conclusion: Yoshiaki Tsubata’s mastery in the field of light-emitting technologies, demonstrated through his numerous patents, marks him as a key innovator. His commitment to enhancing light emission efficiency is evidenced by his latest inventions and collaborations, positioning him as a vital asset in the scientific community and the industry at large.

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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