Yokohama, Japan

Syuji Ichikawa

This inventor holds 2 USPTO granted patents. Top assignee: Mitsubishi Pencil Company, Limited. Active years: 2005-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Syuji Ichikawa. Retrieved from https://idiyas.com/inventor/syuji-ichikawa

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


Average Co-Inventor Count = 4.4

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2005-2013

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2 patents (USPTO):Explore Patents

Title: Syuji Ichikawa: Innovator in Ink Technology

Introduction

Syuji Ichikawa is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of ink technology, particularly in the development of innovative ink compositions for ballpoint pens. With a total of 2 patents to his name, Ichikawa's work has enhanced the performance and usability of writing instruments.

Latest Patents

Ichikawa's latest patents include an ink composition for aqueous ink ballpoint pens and a refill for oil-based ink ballpoint pens. The ink composition is designed to achieve a high line intensity while maintaining excellent storage stability and writing performance. It incorporates a thermochromic microcapsule pigment with a small average particle diameter, ensuring a smooth writing experience. The refill for oil-based ink ballpoint pens addresses common issues such as starving at the beginning of writing and protects the pen point. It features a volatilization-inhibiting seal member that prevents moisture absorption and maintains the ink's quality over time.

Career Highlights

Syuji Ichikawa is currently employed at Mitsubishi Pencil Company, Limited, where he continues to innovate in the field of writing instruments. His work has not only improved the functionality of pens but has also contributed to the overall user experience in writing.

Collaborations

Ichikawa has collaborated with notable coworkers, including Hideaki Toomi and Takayuki Ikai. Their combined expertise has fostered a creative environment that encourages the development of cutting-edge ink technologies.

Conclusion

Syuji Ichikawa's contributions to ink technology have made a lasting impact on the writing instrument industry. His innovative patents reflect a commitment to enhancing the quality and performance of ballpoint pens.

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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