Tokyo, Japan

Etsuyo Yamada

This inventor holds 1 USPTO granted patent. Top assignee: Pentel Kabushiki Kaisha. Active years: 2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Etsuyo Yamada. Retrieved from https://idiyas.com/inventor/etsuyo-yamada

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 = 3.0

ph-index = 1

Forward Citations = 5(Granted Patents)


Company Filing History:


Years Active: 2009

Loading Chart...
1 patent (USPTO):Explore Patents

Title: Etsuyo Yamada: Innovator in Ballpoint Pen Technology

Introduction

Etsuyo Yamada is a notable inventor based in Tokyo, Japan. He is recognized for his contributions to the design and functionality of writing instruments, particularly the ballpoint pen. His innovative approach has led to advancements in everyday writing tools, making them more efficient and user-friendly.

Latest Patents

Etsuyo Yamada holds a patent for a ballpoint pen, showcasing his expertise in this field. This patent represents a significant step forward in the design and usability of writing instruments. His work has contributed to the evolution of the ballpoint pen, enhancing its performance and reliability.

Career Highlights

Yamada is currently employed at Pentel Kabushiki Kaisha, a well-respected company in the stationery industry. His role at Pentel has allowed him to collaborate with other talented individuals and contribute to the development of innovative writing products. His dedication to improving writing technology is evident in his work.

Collaborations

Throughout his career, Etsuyo Yamada has worked alongside talented colleagues, including Shigeo Oka and Rika Tezuchi. Their collaborative efforts have fostered a creative environment that encourages innovation and the development of new ideas in writing technology.

Conclusion

Etsuyo Yamada's contributions to the ballpoint pen industry highlight his innovative spirit and dedication to improving everyday writing tools. His work at Pentel Kabushiki Kaisha and his collaborations with talented coworkers have solidified his reputation as a leading inventor in 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]
Loading…