Shizuoka, Japan

Hiroki Arai

This inventor holds 9 USPTO granted patents and 1 published patent application and 2 EPO patents. Top assignee: Polyplastics Co., Ltd.. Active years: 2014-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroki Arai. Retrieved from https://idiyas.com/inventor/hiroki-arai-63s0zk5s

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

USPTO Granted Patents = 9 

% Patents Active = 88.9

 

Average Co-Inventor Count = 1.9

ph-index = 1

Forward Citations = 7(Granted Patents)


Location History:

  • Shizuoka, JP (2014 - 2023)
  • Fuji, JP (2020 - 2024)

Company Filing History:


Years Active: 2014-2025

Loading Chart...
Loading Chart...
9 patents (USPTO):Explore Patents

Title: Innovator Spotlight: Hiroki Arai

Introduction

Hiroki Arai, an accomplished inventor based in Shizuoka, Japan, has made significant contributions to the fields of polymer engineering and automotive parts. With a remarkable portfolio of eight patents, Arai has proven to be a key figure in the development of innovative materials that enhance product performance and safety.

Latest Patents

Hiroki Arai's latest patents focus on polyacetal resin compositions designed for use in automobile parts. One notable patent details a polyacetal resin composition comprising a polyacetal copolymer resin, hindered phenol-based antioxidants, and various additives to achieve superior conductivity and stability. This complex formulation includes specific ratios and types of ingredients such as magnesium oxide or zinc oxide, carbon-based conductive additives, and polyalkylene glycol. A second patent further refines this composition, emphasizing precise measurements and the role of carbon black to improve the material's overall properties.

Career Highlights

Hiroki Arai is currently employed at Polyplastics Co., Ltd., where he works on advancing polymer technology. His contributions not only enhance the functionality of automotive components but also push the boundaries of material science in industry. Through his innovative approaches, Arai has established himself as a prominent inventor in his field.

Collaborations

Throughout his career, Hiroki Arai has collaborated with talented individuals such as Tomohiro Monma and Yuuki Kanda. These partnerships have fostered a creative environment that drives innovation and expedites the development of new materials and technologies.

Conclusion

Hiroki Arai's dedication to innovation in polymer engineering has resulted in significant advancements within the automotive industry. His work, characterized by a deep understanding of material properties and applications, continues to influence the development of high-performance products. As he forges ahead with new inventions, Arai remains a pivotal figure in shaping the future of engineering solutions.

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…