Tokyo, Japan

Toshiji Yokotani

This inventor holds 1 USPTO granted patent. Top assignee: The Pilot Ink Co., Ltd.. Active years: 2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiji Yokotani. Retrieved from https://idiyas.com/inventor/toshiji-yokotani

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2001

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1 patent (USPTO):Explore Patents

Title: Toshiji Yokotani: Innovator in Ink Technology

Introduction

Toshiji Yokotani is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of ink technology, particularly in the design of ballpoint pens. His innovative approach has led to the development of a unique ink follower composition that enhances the functionality of writing instruments.

Latest Patents

Yokotani holds a patent for an ink follower composition specifically designed for ballpoint pens. This composition comprises a hardly volatile liquid and expansible synthetic mica with a quaternary ammonium ion introduced. Alternatively, it can include a thickener along with synthetic mica. The primary function of this ink follower composition is to ensure that ink flows smoothly without leaving residue on the inner walls of the ink container. This innovation significantly improves the user experience of ballpoint pens.

Career Highlights

Yokotani is associated with Pilot Ink Co., Ltd., a leading company in the writing instrument industry. His work at Pilot has allowed him to focus on developing advanced ink technologies that cater to the needs of consumers. His dedication to innovation has positioned him as a key figure in the field.

Collaborations

Yokotani has collaborated with Hideaki Asami, a fellow innovator in the industry. Their partnership has fostered the exchange of ideas and has contributed to the advancement of ink technology.

Conclusion

Toshiji Yokotani's contributions to ink technology, particularly through his patented ink follower composition, have made a lasting impact on the ballpoint pen industry. His work continues to influence the design and functionality of writing instruments, showcasing the importance of innovation in everyday products.

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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