Tokyo, Japan

Yoriyuki Tsunakawa

This inventor holds 1 USPTO granted patent. Top assignees: Japan Tobacco Inc., Kett Electric Laboratory, Tohoku Electric Power Company, Inc.. Active years: 1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoriyuki Tsunakawa. Retrieved from https://idiyas.com/inventor/yoriyuki-tsunakawa

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 11.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 1999

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1 patent (USPTO):Explore Patents

Title: Yoriyuki Tsunakawa: Innovator in Coal Discrimination Technology

Introduction

Yoriyuki Tsunakawa is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of coal discrimination technology. His innovative approach has led to the development of a unique method and apparatus for discriminating coal species.

Latest Patents

Yoriyuki Tsunakawa holds a patent for a "Method and apparatus of discriminating coal species." This invention involves preparing discriminating values of coal species and properties corresponding to coal ranks. The method includes irradiating coal with near-infrared rays of different wavelengths and receiving the reflected light. The absorbances of the coal are acquired, allowing for the discrimination of coal species based on these absorbances and a prescribed calibration curve. He has 1 patent to his name.

Career Highlights

Throughout his career, Tsunakawa has worked with prominent companies, including Japan Tobacco Inc. and Kett Electric Laboratory. His experience in these organizations has contributed to his expertise in the field of coal technology.

Collaborations

Yoriyuki Tsunakawa has collaborated with notable individuals such as Takuya Kinoshita and Mitsuyuki Takahashi. These collaborations have further enhanced his work and innovations in coal discrimination.

Conclusion

Yoriyuki Tsunakawa is a distinguished inventor whose work in coal discrimination technology has made a significant impact. His innovative methods and collaborations reflect his dedication to advancing this field.

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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