Kodaira, Japan

Hiroyuki Koseki

This inventor holds 25 USPTO granted patents, plus 3 CIPO patents, primarily in Pneumatic Tire Technology. Top assignees: Bridgestone Corporation, Bridgestone Tire Company Limited. Active years: 1985-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Koseki. Retrieved from https://idiyas.com/inventor/hiroyuki-koseki

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 = 2.8

ph-index = 9

Forward Citations = 157(Granted Patents)


Location History:

  • Ohmiya, JP (1985 - 1987)
  • Kodaisa, JP (1991)
  • Kodaira, JP (1987 - 1998)
  • Tokyo, JP (1990 - 1998)

Company Filing History:


Years Active: 1985-1998

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Areas of Expertise:
Pneumatic Tires
Radial Tires
Bead Structure
Cord Ply
Heavy Duty Tires
Durability
Carcass Profile
Reinforcing Laminate
Zigzag Belt
Sidewall Recesses
Wave-Shaped Cords
Low-Section Tires
25 patents (USPTO):Explore Patents

Title: Hiroyuki Koseki: Innovator in Pneumatic Radial Tires

Introduction

Hiroyuki Koseki, a prominent inventor based in Kodaira, Japan, has made significant contributions to the field of tire technology. With a remarkable portfolio of 25 patents, Koseki has focused on enhancing the durability and performance of pneumatic radial tires. His innovations have been pivotal in advancing tire design, particularly through the effective arrangement of reinforcing elements in tire construction.

Latest Patents

Among his recent innovations, Koseki's patent for a tire component used in pneumatic radial tires stands out. This invention involves a rubber-coated layer composed of a specific number of reinforcing elements arranged parallel to one another. Notably, at least 30% of these elements are grouped and spaced differently than those that are not grouped. This clever arrangement helps prevent cracking at the cut ends of the reinforcing elements, thus enhancing the tire's overall durability.

Career Highlights

Koseki's career is distinguished by his tenure at leading companies in the tire industry, including Bridgestone Corporation and Bridgestone Tire Company Limited. His work at these organizations has allowed him to apply his innovative ideas to real-world applications, leading to notable advancements in tire technology.

Collaborations

Throughout his career, Koseki has collaborated with esteemed colleagues such as Yoshihide Kohno and Yasuhiko Kobayashi. Together, they have worked on various projects that have propelled the industry forward, highlighting the importance of teamwork in the innovation process.

Conclusion

Hiroyuki Koseki's contributions to tire technology underline his role as a significant inventor in this field. With his impressive portfolio of patents and his collaborations with notable professionals, Koseki continues to influence the evolution of pneumatic radial tires, ensuring they meet the demands of modern vehicles and enhance road safety.

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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