logo

For the Inventor, By the Inventor

Osaka, Japan

Ryota Hirakawa

This inventor holds 4 USPTO granted patents and 2 EPO patents. Top assignee: Teijin Limited. Active years: 2021-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryota Hirakawa. Retrieved from https://idiyas.com/inventor/ryota-hirakawa

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 = 75.0

 

Average Co-Inventor Count = 4.1

ph-index = 1


Company Filing History:

goldMedal4 out of 1,605 
 
Teijin Limited
 patents

Years Active: 2021-2026

Loading Chart...
Loading Chart...
4 patents (USPTO):Explore Patents
1. 12735814 - Pitch-based ultrafine carbon fibers and pitch-based ultrafine carbon fiber dispersion (2026-09-15),
2. 11532822 - Fibrous carbon, method for manufacturing same, electrode mixture layer for non-aqueous-electrolyte secondary cell, electrode for non-aqueous-electrolyte secondary cell, and non-aqueous-electrolyte secondary cell (2022-12-20),
3. 11205773 - Fibrous carbon-containing electrode mixture layer for nonaqueous electrolyte secondary batteries, electrode for nonaqueous electrolyte secondary batteries comprising same, and nonaqueous electrolyte secondary battery (2021-12-21),
4. 11066759 - Pitch-based ultrafine carbon fibers, method for producing same, non-aqueous electrolyte secondary battery negative electrode using said pitch-based ultrafine carbon fibers, and non-aqueous electrolyte secondary battery having said non-aqueous electrolyte secondary battery negative electrode (2021-07-20),

Title: Ryota Hirakawa: Innovator in Non-Aqueous Electrolyte Secondary Cells

Introduction

Ryota Hirakawa is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of non-aqueous electrolyte secondary cells. With a total of 4 patents to his name, Hirakawa's work focuses on advanced materials and methods that enhance the performance of energy storage devices.

Latest Patents

Hirakawa's latest patents include innovative technologies such as fibrous carbon, a method for manufacturing the same, and various components for non-aqueous electrolyte secondary cells. His inventions provide a fibrous carbon characterized by an average effective fiber length of 1-100 μm, with a crystallite length (La) measured using X-ray diffraction ranging from 100-500 nm. Additionally, he has developed an electrode mixture layer for non-aqueous electrolyte secondary cells, which comprises an electrode active material and a carbon-based electroconductive auxiliary agent containing fibrous carbon. His work also includes the design of electrodes and non-aqueous electrolyte secondary cells that utilize these advanced materials.

Career Highlights

Hirakawa is currently employed at Teijin Limited, where he continues to push the boundaries of innovation in energy storage technologies. His expertise in materials science and engineering has positioned him as a key player in the development of next-generation batteries.

Collaborations

Hirakawa collaborates with talented individuals such as Kazuki Yachi and Shinya Komura. Together, they work on projects that aim to improve the efficiency and effectiveness of energy storage solutions.

Conclusion

Ryota Hirakawa's contributions to the field of non-aqueous electrolyte secondary cells highlight his innovative spirit and dedication to advancing technology. His patents reflect a commitment to enhancing energy storage systems, making him a notable figure in the industry.

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]
Loading…