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For the Inventor, By the Inventor

Tokyo, Japan

Ken Masaoka

This inventor holds 5 USPTO granted patents. Top assignee: Bridgestone Corporation. Active years: 1997-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ken Masaoka. Retrieved from https://idiyas.com/inventor/ken-masaoka

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

USPTO Granted Patents = 5

% Patents Active = 80.0

Average Co-Inventor Count = 1.4

ph-index = 4

Forward Citations = 43(Granted Patents)


Location History:

  • Kodaira, JP (2003)
  • Tokyo, JP (1997 - 2005)

Company Filing History:

goldMedal5 out of 5,193 
 
Bridgestone Corporation
 patents

Years Active: 1997-2005

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5 patents (USPTO):Explore Patents
1. 6892779 - Assembly of a pneumatic tire and a rim, a pneumatic tire and a rim for a pneumatic tire (2005-05-17),
2. 6591880 - Pneumatic tire including zig-zag circumferential fine grooves (2003-07-15),
3. 6012499 - Pneumatic tire including inclined grooves and connection grooves (2000-01-11),
4. 5769977 - Pneumatic tire with grooves having bending or winding portion (1998-06-23),
5. 5690761 - Pneumatic tire including blocks (1997-11-25),

Title: Ken Masaoka: Innovator in Pneumatic Tire Technology

Introduction

Ken Masaoka is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of pneumatic tire technology. With a total of 5 patents to his name, Masaoka's work has had a considerable impact on tire design and functionality.

Latest Patents

Masaoka's latest patents include innovative designs for tire assemblies. One notable invention is the assembly of a pneumatic tire and a rim. This invention provides a unique assembly where the tire features at least one carcass ply and a belt layer. The ply is composed of ply cords and has end portions, while the belt layer consists of belt cords that extend in a direction intersecting the ply cord. This design allows for improved stress absorption when the tire is rolled under load, significantly reducing rolling resistance.

Another of his recent patents involves a pneumatic tire that includes zig-zag circumferential fine grooves. This design features a tread portion with multiple circumferential main grooves and fine grooves formed in the circumferential rib. These innovations enhance the tire's performance and durability.

Career Highlights

Ken Masaoka is currently employed at Bridgestone Corporation, a leading company in tire manufacturing. His work at Bridgestone has allowed him to develop and refine his innovative tire designs. His contributions have been instrumental in advancing the technology used in modern tires.

Collaborations

Masaoka has collaborated with notable coworkers, including Hiroyuki Matsumoto and Akiyoshi Shimizu. Their teamwork has fostered an environment of innovation and creativity within the company.

Conclusion

Ken Masaoka's contributions to pneumatic tire technology exemplify the spirit of innovation. His patents reflect a deep understanding of tire mechanics and design, making him a key figure in the industry. His work continues to influence tire manufacturing and performance standards.

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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