Yokohama, Japan

Yumiko Haruhara

This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignee: Mitsubishi Pencil Company, Limited. Active years: 2023-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yumiko Haruhara. Retrieved from https://idiyas.com/inventor/yumiko-haruhara

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 = 1.2

ph-index = 1


Location History:

  • Yokohama, JP (2023)
  • Kanagawa, JP (2023)
  • Tokyo, JP (2024)

Company Filing History:


Years Active: 2023-2024

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3 patents (USPTO):Explore Patents

Title: Yumiko Haruhara: Innovator in Writing Utensils

Introduction

Yumiko Haruhara is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of writing utensils, particularly through his innovative patents. With a total of 3 patents, Haruhara has focused on enhancing the functionality and performance of writing instruments.

Latest Patents

His latest patents include an oil-based ink composition for writing utensils, a writing utensil using the same, and an airbrush unit utilizing this composition. The oil-based ink composition is designed to provide excellent writing properties on various surfaces while improving scratch resistance. This innovative ink contains an aluminum pigment, a colorant, a resin, an organic solvent, and polydimethylsiloxane with specific polyether-modifying groups. Additionally, the oil-based ink composition for writing implements incorporates fluorine-based resin particles, which enhance its performance.

Career Highlights

Yumiko Haruhara is currently employed at Mitsubishi Pencil Company, Limited, where he continues to develop cutting-edge writing tools. His work has significantly impacted the quality and usability of writing instruments in the market.

Collaborations

Haruhara collaborates with Takayuki Ikai, contributing to the innovative environment at Mitsubishi Pencil Company. Their teamwork fosters creativity and leads to the development of advanced products.

Conclusion

Yumiko Haruhara's contributions to the field of writing utensils demonstrate his commitment to innovation and quality. His patents reflect a deep understanding of materials and their applications, making him a valuable figure in the industry.

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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