Saitama, Japan

Koichi Enuma

This inventor holds 2 USPTO granted patents. Top assignee: Pentel Kabushiki Kaisha. Active years: 1993-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Enuma. Retrieved from https://idiyas.com/inventor/koichi-enuma

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 = 7.0

ph-index = 2

Forward Citations = 19(Granted Patents)


Company Filing History:


Years Active: 1993-1994

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2 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Koichi Enuma

Introduction

Koichi Enuma is a notable inventor based in Saitama, Japan. He has made significant contributions to the field of writing instruments, holding a total of 2 patents. His work reflects a commitment to enhancing the functionality and usability of everyday writing tools.

Latest Patents

One of Enuma's latest patents focuses on a writing instrument that incorporates a temporary ink storage member made from a synthetic resin injection molded article. This innovative design sandwiches the storage member between a pen tip and an ink tank. The invention features a flange portion that fits into a predetermined apparatus, which is integrally formed with a shaft made of synthetic resin. The temporary ink storage member is designed to be flexible, and the shaft is crafted from a material that is softer than that of the tip holder. This design allows the tip holder to serve as a writing thickness display member. Additionally, the temporary ink storage member can function as an ink color display member, while the cap can be adapted for different types of writing instruments.

Career Highlights

Koichi Enuma is currently associated with Pentel Kabushiki Kaisha, a company renowned for its innovative writing instruments. His work at Pentel has allowed him to explore and develop new ideas that enhance the user experience of writing tools.

Collaborations

Enuma has collaborated with talented coworkers such as Takashi Tamura and Masamitsu Nagahama. Their combined efforts contribute to the innovative environment at Pentel, fostering creativity and advancement in writing instrument technology.

Conclusion

Koichi Enuma's contributions to the field of writing instruments exemplify his innovative spirit and dedication to improving everyday tools. His patents reflect a deep understanding of user needs and a commitment to enhancing functionality.

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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