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For the Inventor, By the Inventor

Kodaira, Japan

Hiroo Matsunaga

This inventor holds 5 USPTO granted patents. Top assignee: Bridgestone Corporation. Active years: 1993-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroo Matsunaga. Retrieved from https://idiyas.com/inventor/hiroo-matsunaga

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 = 2.4

ph-index = 3

Forward Citations = 16(Granted Patents)


Company Filing History:

goldMedal5 out of 5,194 
 
Bridgestone Corporation
 patents

Years Active: 1993-2005

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5 patents (USPTO):Explore Patents
1. 6896836 - Vulcanization process for pneumatic tire and mold therefor (2005-05-24),
2. 6830722 - Method of manufacturing pneumatic tire and vulcanizing metal mold used for the method (2004-12-14),
3. 5425828 - Process for the manufacture of pneumatic radial tires with initial (1995-06-20),
4. 5277238 - Pneumatic radial tires for passenger cars (1994-01-11),
5. 5228933 - High performance pneumatic radial tires (1993-07-20),

Title: Hiroo Matsunaga: Pneumatic Tire Manufacturing Innovations.

Introduction

Hiroo Matsunaga is an inventor based in Kodaira, Japan, whose work focuses on pneumatic tire manufacturing and vulcanization technology. He is associated with Bridgestone Corporation and holds 5 patents.

Latest Patents

Matsunaga’s listed patents address tire vulcanization and mold design.

“Vulcanization Process for Pneumatic Tire and Mold Therefor” describes venting a green tire in a region corresponding to its sidewall while the tire is in a vulcanization mold. The process is intended to support the manufacture of a pneumatic tire with a tread, sidewalls, and bead portions.

“Method of Manufacturing Pneumatic Tire and Vulcanizing Metal Mold Used for the Method” concerns producing a tire with a trapezoidal bead guard while avoiding spews and bare areas. It describes positioning mold-parting edges in locations corresponding to recessed portions that form the bead guard.

Career Highlights

Matsunaga’s patent work reflects a focus on practical improvements to tire molding, including venting during vulcanization and mold configurations for bead-guard appearance. His listed affiliation is Bridgestone Corporation.

Collaborations

Matsunaga’s coworkers include Misao Kawabata and Yutaka Yamaguchi.

Conclusion

Hiroo Matsunaga’s patents document contributions to pneumatic tire production, with particular attention to vulcanization processes and mold design.

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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