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For the Inventor, By the Inventor

Akron, OH, United States of America

Takatsugu Hashimoto

This inventor holds 14 USPTO granted patents. Top assignees: Bridgestone Corporation, Bridgestone/firestone, Inc.. Active years: 1992-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takatsugu Hashimoto. Retrieved from https://idiyas.com/inventor/takatsugu-hashimoto

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

USPTO Granted Patents = 14

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 6

Forward Citations = 105(Granted Patents)


Location History:

  • Akron, OH (US) (1992 - 1994)
  • Ogawanishi, JP (1996)
  • Tokyo, JP (1992 - 1999)

Company Filing History:

goldMedal11 out of 5,195 
 
Bridgestone Corporation
 patents
silverMedal6 out of 342 
 
Bridgestone/firestone, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1992-1999

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14 patents (USPTO):Explore Patents
1. 5998513 - Rubber composition containing an asphaltene-containing softening agent (1999-12-07),
2. 5587417 - Rubber composition for tire tread (1996-12-24),
3. 5489660 - Copolymers of conjugated dienes and aromatic vinyl compounds prepared by (1996-02-06),
4. 5331036 - Oil extended ultra high molecular weight elastomers (1994-07-19),
5. 5272203 - High performance tire treads and tires (1993-12-21),
6. 5260370 - Oil extended ultra high molecular weight elastomers (1993-11-09),
7. 5231152 - Continuous process for preparing copolymers of conjugated dienes and (1993-07-27),
8. 5202363 - Anhydrous metal salts of .alpha.,.beta.-ethylenically unsaturated (1993-04-13),
9. 5147951 - Method for preparing ultra high molecular weight copolymers of (1992-09-15),
10. 5143957 - Solid golf balls reinforced with anhydrous metal salts of (1992-09-01),
11. 5137976 - Anhydrous metal salts of .alpha.,.beta.-ethylenically unsaturated (1992-08-11),
12. 5120794 - Anhydrous metal salts of .alpha.-.beta.-ethylenically unsaturated (1992-06-09),
13. 5096943 - Method for incorporating metal salts of .alpha.,.beta.-ethylenically (1992-03-17),
14. 5093402 - Solid golf balls reinforced with metal salts of (1992-03-03),

Title: Innovations by Takatsugu Hashimoto: Pioneering Rubber Technologies

Introduction

Takatsugu Hashimoto is a notable inventor based in Akron, OH, who has made significant contributions to the field of rubber technology. With a prolific portfolio featuring 14 patents, Hashimoto's innovations have played a crucial role in enhancing the performance of rubber materials used in various industries, particularly in tire manufacturing.

Latest Patents

Among his recent inventions, Hashimoto has filed patents for a novel rubber composition containing an asphaltene-containing softening agent. This innovative mixture consists of 100 parts by weight of rubber components, including both natural and synthetic rubbers, combined with 1 to 120 parts by weight of a softening agent that incorporates 0.1 to 4% by weight of asphaltene. This unique composition demonstrates exceptional properties, featuring high loss properties, superior fracture resistance, and excellent workability, making it ideal for various applications.

Another notable patent is his rubber composition specifically designed for tire treads. This invention reflects Hashimoto's keen understanding of the demanding requirements of tire performance and durability.

Career Highlights

Throughout his career, Takatsugu Hashimoto has been associated with prestigious organizations, including Bridgestone Corporation and Bridgestone/Firestone, Inc. His work in these companies has solidified his reputation as a leading innovator in the rubber industry.

Collaborations

Hashimoto has collaborated with eminent colleagues such as Jung W. Kang and Arthur E. Oberster. These partnerships have not only enriched his research but have also contributed to the advancement of technologies within the field.

Conclusion

In summary, Takatsugu Hashimoto's contributions to the rubber industry through his innovative patents are invaluable. His dedication to improving material compositions continues to influence tire manufacturing and beyond, showcasing the impact of inventors in creating solutions that meet modern demands.

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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